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

Ex Input:
customer: Hello,.
agent: Hello. How may I guide you today?
customer: Can you please help me in cancelling my recent reservation, as my FIFA match got cancelled.
agent: Sure, I am gleeful to help you with that. May I know your name please?
customer: Myself, Lisa Mitchell.
agent: Please wait for a while, let me check your previous reservation status.
customer: Ok.
agent: Thank you for waiting. There is no reservation found on your name in our database to cancel it.
customer: Ok, no issues. Thank you for opting us.
agent: Thank you for reaching us, have a great day.

Ex Output:
no_reservation

Ex Input:
customer: Hi, myself Jack Thomas.
agent: Hello Jack, how may I help you?
customer: I need your help in booking my flight ticket from ATL to IAD, can you please help me?
agent: Sure, I can help you. May I know your journey dates?
customer: Sure, I would like to depart on 01/17 and return on 01/19.
agent: Please give me a moment.
customer: Sure.
agent: Spirit airlines with flight 1015 is available on your route.
customer: That's fine for my journey, you can proceed for booking the ticket.
agent: Your ticket is reserved.
customer: Thank you very much for your help.
agent: Thank you for choosing us.

Ex Output:
book

Ex Input:
customer: Hi.
agent: Hello, how may I aid you?
customer: Could you please book a flight ticket from PHX to IAD?
agent: Sure, I am here to help you out. Please provide me your trip dates.
customer: My trip dates are June 25 and June 27.
agent: May I know your name to proceed further?
customer: My name is Kathleen Campbell.
agent: May I know your connection limit?
customer: I need a single connecting flight.
agent: Kathleen Campbell, here is a connecting flight in economy class with Frontier airlines. Can I proceed with it?
customer: Yes, proceed.
agent: Your ticket has been booked with 1025 flight.
customer: Thank you.
agent: Thank you for reaching us.

Ex Output:
book