diff --git a/.idea/misc.xml b/.idea/misc.xml
new file mode 100644
index 0000000..639900d
--- /dev/null
+++ b/.idea/misc.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectRootManager">
+    <output url="file://$PROJECT_DIR$/out" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/.idea/workspace.xml b/.idea/workspace.xml
new file mode 100644
index 0000000..36099c1
--- /dev/null
+++ b/.idea/workspace.xml
@@ -0,0 +1,69 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="AutoImportSettings">
+    <option name="autoReloadType" value="SELECTIVE" />
+  </component>
+  <component name="ChangeListManager">
+    <list default="true" id="337c6ce9-e8ed-4d95-b364-55effd56cf34" name="Changes" comment="">
+      <change beforePath="$PROJECT_DIR$/Flight/flightInfo.txt" beforeDir="false" />
+      <change beforePath="$PROJECT_DIR$/src/main/java/lessons/lesson06/ReservationSystem.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/main/java/lessons/lesson06/ReservationSystem.java" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/src/main/java/lessons/lesson06/ReserveMain.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/main/java/lessons/lesson06/ReserveMain.java" afterDir="false" />
+    </list>
+    <option name="SHOW_DIALOG" value="false" />
+    <option name="HIGHLIGHT_CONFLICTS" value="true" />
+    <option name="HIGHLIGHT_NON_ACTIVE_CHANGELIST" value="false" />
+    <option name="LAST_RESOLUTION" value="IGNORE" />
+  </component>
+  <component name="ExternalProjectsData">
+    <projectState path="$PROJECT_DIR$">
+      <ProjectState />
+    </projectState>
+  </component>
+  <component name="ExternalProjectsManager">
+    <system id="GRADLE">
+      <state>
+        <projects_view>
+          <tree_state>
+            <expand>
+              <path>
+                <item name="" type="6a2764b6:ExternalProjectsStructure$RootNode" />
+                <item name="java-course" type="f1a62948:ProjectNode" />
+              </path>
+            </expand>
+            <select />
+          </tree_state>
+        </projects_view>
+      </state>
+    </system>
+  </component>
+  <component name="Git.Settings">
+    <option name="RECENT_GIT_ROOT_PATH" value="$PROJECT_DIR$" />
+  </component>
+  <component name="ProjectColorInfo"><![CDATA[{
+  "associatedIndex": 5
+}]]></component>
+  <component name="ProjectId" id="33v9d9Ly4LUY5i5hyojkBY2aRpq" />
+  <component name="ProjectViewState">
+    <option name="hideEmptyMiddlePackages" value="true" />
+    <option name="showLibraryContents" value="true" />
+  </component>
+  <component name="PropertiesComponent"><![CDATA[{
+  "keyToString": {
+    "Gradle.java-course [:lessons.lesson06.ReserveMain.main()].executor": "Run",
+    "RunOnceActivity.ShowReadmeOnStart": "true",
+    "RunOnceActivity.git.unshallow": "true",
+    "git-widget-placeholder": "backup__all__lessons"
+  }
+}]]></component>
+  <component name="SpellCheckerSettings" RuntimeDictionaries="0" Folders="0" CustomDictionaries="0" DefaultDictionary="application-level" UseSingleDictionary="true" transferred="true" />
+  <component name="TaskManager">
+    <task active="true" id="Default" summary="Default task">
+      <changelist id="337c6ce9-e8ed-4d95-b364-55effd56cf34" name="Changes" comment="" />
+      <created>1760186764962</created>
+      <option name="number" value="Default" />
+      <option name="presentableId" value="Default" />
+      <updated>1760186764962</updated>
+    </task>
+    <servers />
+  </component>
+</project>
\ No newline at end of file
diff --git a/src/main/java/lessons/lesson07/Flight/flightInfo.txt b/src/main/java/lessons/lesson07/Flight/flightInfo.txt
new file mode 100644
index 0000000..6661002
--- /dev/null
+++ b/src/main/java/lessons/lesson07/Flight/flightInfo.txt
@@ -0,0 +1,50 @@
+1
+Economy
+PAID
+2025-10-15T12:00:52.546690
+Feruz
+2
+Economy
+PAID
+2025-10-15T12:01:07.354018400
+dfe
+3
+Economy
+BOOKED
+2025-10-15T12:01:44.079517200
+Helen
+4
+Economy
+FREE
+null
+No passenger!
+5
+Economy
+FREE
+null
+No passenger!
+6
+Economy
+FREE
+null
+No passenger!
+7
+Economy
+FREE
+null
+No passenger!
+8
+Economy
+FREE
+null
+No passenger!
+9
+Economy
+FREE
+null
+No passenger!
+10
+Economy
+FREE
+null
+No passenger!
diff --git a/src/main/java/lessons/lesson07/Passenger.java b/src/main/java/lessons/lesson07/Passenger.java
new file mode 100644
index 0000000..762af38
--- /dev/null
+++ b/src/main/java/lessons/lesson07/Passenger.java
@@ -0,0 +1,20 @@
+package lessons.lesson07;
+
+public class Passenger extends Person {
+    private int seatNumber;
+    private String flightClass;
+
+    public Passenger(String fio, int id, int seatNumber, String flightClass) {
+        super(fio, id);
+        this.seatNumber = seatNumber;
+        this.flightClass = flightClass;
+    }
+
+    public int getSeatNumber() {
+        return seatNumber;
+    }
+
+    public String getFlightClass() {
+        return flightClass;
+    }
+}
diff --git a/src/main/java/lessons/lesson07/Person.java b/src/main/java/lessons/lesson07/Person.java
new file mode 100644
index 0000000..137d26d
--- /dev/null
+++ b/src/main/java/lessons/lesson07/Person.java
@@ -0,0 +1,35 @@
+package lessons.lesson07;
+
+public abstract class Person {
+    private String fio;
+    private int id;
+
+    public Person(String fio, int id) {
+        this.fio = fio;
+        this.id = id;
+    }
+
+    public String getFio() {
+        return fio;
+    }
+
+    public void setFio(String fio) {
+        this.fio = fio;
+    }
+
+    public int getId() {
+        return id;
+    }
+
+    public void setId(int id) {
+        this.id = id;
+    }
+
+    @Override
+    public String toString() {
+        return "Person{" +
+                "fio='" + fio + '\'' +
+                ", id=" + id +
+                '}';
+    }
+}
diff --git a/src/main/java/lessons/lesson07/ReservationSystem.java b/src/main/java/lessons/lesson07/ReservationSystem.java
new file mode 100644
index 0000000..d6659cb
--- /dev/null
+++ b/src/main/java/lessons/lesson07/ReservationSystem.java
@@ -0,0 +1,152 @@
+package lessons.lesson07;
+
+import java.io.*;
+import java.time.LocalDateTime;
+import java.util.ArrayList;
+
+public class ReservationSystem {
+    private int totalSeats;
+    private String destination;
+    private LocalDateTime flightDateTime;
+    protected ArrayList<SeatReservation> seatReservations = new ArrayList<>();
+
+    public ReservationSystem(int totalSeats, String destination, LocalDateTime flightDateTime) {
+        this.totalSeats = totalSeats;
+        this.destination = destination;
+        this.flightDateTime = flightDateTime;
+
+        // создает пустые места
+        for (int i = 1; i <= totalSeats; i++) {
+            seatReservations.add(new SeatReservation(i, "Economy", false, null));
+        }
+    }
+
+    public SeatReservation findSeat(int seatNumber) {
+        for (SeatReservation s : seatReservations) {
+            if (seatNumber == s.getSeatNumber()) {
+                return s;
+            }
+        }
+        return null;
+    }
+
+    public void bookSeat(int seatNumber, Passenger passenger) {
+        SeatReservation seat = findSeat(seatNumber);
+        if (seat != null) {
+            if (seat.status.equals("FREE")) {
+                seat.passenger = passenger;
+                seat.book();
+            } else {
+                System.out.println("Not available! Current status: " + seat.status);
+            }
+        } else {
+            System.out.println("There is no such seat number!");
+        }
+    }
+
+    public void cancelSeat(int seatNumber) {
+        SeatReservation seat = findSeat(seatNumber);
+        if (seat != null) {
+            if (!seat.status.equals("FREE")) {
+                seat.cancel();
+            } else {
+                System.out.println("This seat is not booked yet!");
+            }
+        } else {
+            System.out.println("There is no such seat!");
+        }
+    }
+
+    public void payForSeat(int seatNumber) {
+        SeatReservation seat = findSeat(seatNumber);
+        if (seat == null) {
+            System.out.println("There is no such seat!");
+            return;
+        }
+
+        if (seat.status.equals("BOOKED")) {
+            seat.status = "PAID";
+            System.out.println("Payment successful. Seat " + seatNumber + " is now paid!");
+        } else if (seat.status.equals("PAID")) {
+            System.out.println("This seat is already paid!");
+        } else {
+            System.out.println("Cannot pay for this seat! It’s not booked yet.");
+        }
+    }
+
+    public void showAllSeats() {
+        System.out.println("=== All Seats in the Airplane ===");
+        for (SeatReservation seat : seatReservations) {
+            if (seat.isExpired()) {
+                seat.cancel();
+                System.out.println("Seat " + seat.getSeatNumber() + " — booking expired and freed automatically!");
+            }
+
+            String status = seat.status;
+            String fio = (seat.passenger != null) ? seat.passenger.getFio() : "No passenger";
+            System.out.printf("Seat %2d | Class: %-8s | Status: %-10s | %s%n",
+                    seat.getSeatNumber(), seat.getFlightClass(), status, fio);
+        }
+        System.out.println("================================");
+    }
+
+    public void saveToFile() {
+        File directory = new File("Flight");
+        File file = new File(directory, "flightInfo.txt");
+        try {
+            directory.mkdir();
+            file.createNewFile();
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+
+        try (FileWriter writer = new FileWriter(file, false)) {
+            for (SeatReservation s : seatReservations) {
+                writer.write(s.getSeatNumber() + "\n");
+                writer.write(s.getFlightClass() + "\n");
+                writer.write(s.status + "\n");
+                writer.write((s.bookingTime != null ? s.bookingTime.toString() : "null") + "\n");
+                writer.write((s.getPassenger() != null ? s.getPassenger().getFio() : "No passenger!") + "\n");
+            }
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+    }
+
+    public void loadFromFile() {
+        File directory = new File("src/main/java/lessons/lesson06/Flight");
+        File file = new File(directory, "flightInfo.txt");
+        if (!file.exists()) return;
+
+        try (BufferedReader br = new BufferedReader(new FileReader(file))) {
+            String line;
+            seatReservations.clear();
+
+            while ((line = br.readLine()) != null) {
+                int seatNumber = Integer.parseInt(line);
+                String flightClass = br.readLine();
+                String status = br.readLine();
+                String bookingTimeStr = br.readLine();
+                String passengerFio = br.readLine();
+
+                Passenger passenger = null;
+                if (!passengerFio.equals("No passenger!")) {
+                    passenger = new Passenger(passengerFio, 0, seatNumber, flightClass);
+                }
+
+                SeatReservation seat = new SeatReservation(seatNumber, flightClass, false, passenger);
+                seat.status = status;
+                if (!"null".equals(bookingTimeStr)) {
+                    seat.bookingTime = LocalDateTime.parse(bookingTimeStr);
+                }
+
+                seatReservations.add(seat);
+            }
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+    }
+}
+
+
+
diff --git a/src/main/java/lessons/lesson07/Reserve.java b/src/main/java/lessons/lesson07/Reserve.java
new file mode 100644
index 0000000..14d4e58
--- /dev/null
+++ b/src/main/java/lessons/lesson07/Reserve.java
@@ -0,0 +1,53 @@
+package lessons.lesson07;
+
+import java.time.LocalDateTime;
+
+public abstract class Reserve {
+    protected int seatNumber;
+    protected String flightClass;
+    protected boolean isReserved;
+    protected Passenger passenger;
+    protected String status = "FREE";
+    protected LocalDateTime bookingTime;
+
+    public Reserve(int seatNumber, String flightClass, boolean isReserved, Passenger passenger) {
+        this.seatNumber = seatNumber;
+        this.flightClass = flightClass;
+        this.isReserved = isReserved;
+        this.passenger = passenger;
+        this.status = isReserved ? "BOOKED" : "FREE";
+    }
+
+    public abstract void book();
+    public abstract void cancel();
+    public abstract String getInfo();
+
+    public boolean isExpired() {
+        if (status.equals("BOOKED") && bookingTime != null) {
+            return bookingTime.plusMinutes(24).isBefore(LocalDateTime.now());
+        }
+        return false;
+    }
+
+    public LocalDateTime getBookingTime() {
+        return bookingTime;
+    }
+
+    public void setBookingTime(LocalDateTime bookingTime) {
+        this.bookingTime = bookingTime;
+    }
+
+    public int getSeatNumber() {
+        return seatNumber;
+    }
+
+    public String getFlightClass() {
+        return flightClass;
+    }
+
+    public Passenger getPassenger() {
+        return passenger;
+    }
+}
+
+
diff --git a/src/main/java/lessons/lesson07/ReserveMain.java b/src/main/java/lessons/lesson07/ReserveMain.java
new file mode 100644
index 0000000..50d14b6
--- /dev/null
+++ b/src/main/java/lessons/lesson07/ReserveMain.java
@@ -0,0 +1,71 @@
+package lessons.lesson07;
+
+import java.time.LocalDateTime;
+import java.util.Scanner;
+
+public class ReserveMain {
+    public static void main(String[] args) {
+
+        Scanner scanner = new Scanner(System.in);
+        LocalDateTime flightTime = LocalDateTime.of(2025, 10, 15, 9, 30);
+
+        ReservationSystem system = new ReservationSystem(10, "Tashkent", flightTime);
+        system.loadFromFile(); // Загрузка данных с предыдущих операций
+
+        while (true) {
+            System.out.println("\n=== AIR TICKET SYSTEM ===");
+            System.out.println("1. Book a seat");
+            System.out.println("2. Pay for a seat");
+            System.out.println("3. Cancel a reservation");
+            System.out.println("4. Show all seats");
+            System.out.println("5. Save and exit");
+            System.out.print("Select an option: ");
+
+            int choice;
+            try {
+                choice = Integer.parseInt(scanner.nextLine());
+            } catch (Exception e) {
+                System.out.println("Please enter a valid number!");
+                continue;
+            }
+
+            switch (choice) {
+                case 1 -> {
+                    System.out.print("Enter seat number: ");
+                    int seatNumber = Integer.parseInt(scanner.nextLine());
+                    System.out.print("Enter passenger name: ");
+                    String name = scanner.nextLine();
+                    System.out.print("Enter passenger ID: ");
+                    int id = Integer.parseInt(scanner.nextLine());
+                    System.out.print("Enter class (Economy/Business): ");
+                    String flightClass = scanner.nextLine();
+
+                    Passenger passenger = new Passenger(name, id, seatNumber, flightClass);
+                    system.bookSeat(seatNumber, passenger);
+                }
+
+                case 2 -> {
+                    System.out.print("Enter seat number to pay for: ");
+                    int seatNumber = Integer.parseInt(scanner.nextLine());
+                    system.payForSeat(seatNumber);
+                }
+
+                case 3 -> {
+                    System.out.print("Enter seat number to cancel: ");
+                    int seatNumber = Integer.parseInt(scanner.nextLine());
+                    system.cancelSeat(seatNumber);
+                }
+
+                case 4 -> system.showAllSeats();
+
+                case 5 -> {
+                    system.saveToFile();
+                    System.out.println("Saved! Exiting program.");
+                    return;
+                }
+
+                default -> System.out.println("Invalid menu option!");
+            }
+        }
+    }
+}
diff --git a/src/main/java/lessons/lesson07/SeatReservation.java b/src/main/java/lessons/lesson07/SeatReservation.java
new file mode 100644
index 0000000..317ad93
--- /dev/null
+++ b/src/main/java/lessons/lesson07/SeatReservation.java
@@ -0,0 +1,62 @@
+package lessons.lesson07;
+
+import java.time.LocalDateTime;
+import java.time.format.DateTimeFormatter;
+
+public class SeatReservation extends Reserve {
+
+    public SeatReservation(int seatNumber, String flightClass, boolean isReserved, Passenger passenger) {
+        super(seatNumber, flightClass, isReserved, passenger);
+    }
+
+    @Override
+    public void book() {
+        if (status.equals("FREE")) {
+            isReserved = true;
+            status = "BOOKED";
+            bookingTime = LocalDateTime.now();
+            System.out.println("Seat " + seatNumber + " booked successfully!");
+        } else {
+            System.out.println("Seat " + seatNumber + " is not available! Current status: " + status);
+        }
+    }
+
+    public void pay() {
+        if (status.equals("BOOKED")) {
+            status = "PAID";
+            System.out.println("Seat " + seatNumber + " has been paid.");
+        } else {
+            System.out.println("Cannot pay for seat " + seatNumber + ". Status: " + status);
+        }
+    }
+
+    @Override
+    public void cancel() {
+        if (status.equals("BOOKED") || status.equals("PAID")) {
+            isReserved = false;
+            status = "FREE";
+            bookingTime = null;
+            passenger = null;
+            System.out.println("Seat " + seatNumber + " canceled successfully.");
+        } else {
+            System.out.println("Seat " + seatNumber + " is not booked yet.");
+        }
+    }
+
+    @Override
+    public String getInfo() {
+        String timeStr = bookingTime != null
+                ? bookingTime.format(DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm"))
+                : "—";
+        return String.format(
+                "Seat %d | Class: %s | Status: %s | Passenger: %s | Booking time: %s",
+                seatNumber,
+                flightClass,
+                status,
+                passenger != null ? passenger.getFio() : "—",
+                timeStr
+        );
+    }
+}
+
+