In this task, you are given a conversation between a flight agent and the customer. You are given 4 options and you need to select the goal of the conversation. It is provided as part of customer's context, which has to be one of the following: `book`: Make a new reservation, `cancel`: Cancel an existing reservation, `no_flight`: No flight found for the customer's preference, `no_reservation`: No reservation / No change / No cancellation was made in the conversation, mostly enquiring details

customer: Hi. 
 agent: Hello, how can I help you today? 
 customer: Can you help me to book a flight from PHL to DTW? 
 agent: Sure, let me know your travel dates? 
 customer: I would like to travel on Sept 26 and 28. 
 agent: Do you have any requirements? 
 customer: I need a connecting flight. 
 agent: Ok, may I know your name please? 
 customer: My name is Sandra Hall. 
 agent: United Airlines has a connecting flight with number 1005 for fare 100, shall I proceed? 
 customer: Proceed with booking. 
 agent: Your ticket is reserve in economy class. 
 customer: Thank you. 
 agent: Thank you for opting us.
book

customer: Hello. 
 agent: Hello. How can I help you? 
 customer: I am Elizabeth Anderson. I am planning to visit Magic Kingdom at Orlando, could you please help me with booking a flight ticket from LAS to MCO? 
 agent: Yes, I can help you. Can you share me your travelling dates? 
 customer: I would like to take off on 05/27 and return on 05/29. 
 agent: Give me a moment. 
 customer: Sure, take your time. 
 agent: I have found a flight ticket with a price of 100 and 1 connection. 
 customer: Please confirm the booking. 
 agent: Ok, your ticket is booked. 
 customer: I really appreciate your help, thank you for your service. 
 agent: Thank you for contacting us.
book

customer: Hello. 
 agent: Hello, how may I aid you? 
 customer: I want to book a flight ticket from PHL to CLT for attending a event. 
 agent: Sure, please provide your journey dates. 
 customer: My travelling dates are July 18 and July 20. 
 agent: Ok, Do you have any class preference? 
 customer: I am comfortable with any class. 
 agent: Ok, Kindly mention your connection limit. 
 customer: Yes, I prefer to travel in a connecting flight. 
 agent: Ok, Is there any other preferences? 
 customer: No. 
 agent: Thank you for providing details, we did not find any flights with your given details. 
 customer: No worries, thank you for the information. 
 agent: May I know your name? 
 customer: I am George Robinson. 
 agent: Thank you for opting us.
no_flight