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

Input: Consider Input: customer: Hi. 
 agent: Hello. How may I assist you? 
 customer: Can you please help me to book flight ticket from JFK to LAX? 
 agent: Sure, may I know your travel dates please? 
 customer: My trip dates are July 18 and July 20. 
 agent: Can you please share your name? 
 customer: I would prefer connecting flight. 
 agent: On whose name you want me to book a flight ticket? 
 customer: Sorry, I am Gary Walker. 
 agent: Do you have any other specifications? 
 customer: No, thank you for asking. 
 agent: American airlines is providing connecting flight for you with the fare of 100 in economy class, shall I proceed with the booking? 
 customer: Yes, you can proceed. 
 agent: Your ticket is booked with the flight-1009. 
 customer: Thank you. 
 agent: Thank you for choosing us.

Output: book


Input: Consider Input: customer: Hi, Patrick Smith here. 
 agent: Hello. How can I help you? 
 customer: We friends were planning to go for Nutshell Bike Tour to Austin, TX-AUS on 08/16. Can you hold me a ticket with single connecting flight? 
 agent: Sure, may I know source code and return journey date please? 
 customer: Sure, I will be back on 08/18 at Orlando, FL-MCO. 
 agent: There is a flight with single connection, can I proceed for booking in 1004 flight? 
 customer: Ok, please proceed. 
 agent: Your booking is done in UA airlines, have a safe journey. 
 customer: Thank you. 
 agent: Thank you for choosing us.

Output: book


Input: Consider Input: customer: Hello. 
 agent: Hello. How can I help you? 
 customer: I want to cancel my recent reservation. Can you help me out? 
 agent: Sure, can you help me with your name? 
 customer: Deborah Lee. 
 agent: Sorry, there is no reservation found under your name. 
 customer: That's ok. Anyways, thank you. 
 agent: Thank you for reaching us.
Output: no_reservation