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 assist you? 
 customer: I want to travel from MSP to SEA. Can you book a flight ticket for me? 
 agent: Sure, tell me your travel dates please? 
 customer: I want to fly in the flight on May 27 and May 29. 
 agent: May I know your name please? 
 customer: I am Edward Robinson. 
 agent: Do you have any connection limit? 
 customer: No, but I want to travel in economy class. 
 agent: Ok, please wait. 
 customer: Ok, take your time. 
 agent: Thanks for your time. Sorry to say that there no flights found with your flight details. 
 customer: That's ok. Anyways, thank you for your help. 
 agent: Thank you.

Ex Output:
no_flight


Ex Input:
customer: Hello. 
 agent: Hello, how may I guide you today? 
 customer: I am Stephen Turner, can you assist me to book a flight from DEN to ATL? 
 agent: Sure, could you please share me with your dates of trip? 
 customer: Ok, my travel date is on 01/07 from Denver and return date is on 01/09. 
 agent: Ok, please hold on for a mean while. The flight with the connecting flight of fare 100 has found, shall I book this ticket booking? 
 customer: Ok, please the book. 
 agent: The flight with the Delta airline and flight number is 1009 has been confirmed. 
 customer: Thank you for helping me with the booking. 
 agent: You are welcome and have a happy journey.

Ex Output:
book


Ex Input:
customer: Hello. 
 agent: Hello, how may I help you? 
 customer: Can you aid me in booking a flight ticket from IAD to CLT? 
 agent: Sure, can I know your travelling dates? 
 customer: I am planning to start on July 20th and return back on July 22nd. 
 agent: On which name should I reserve the flight ticket? 
 customer: Cynthia Scott. 
 agent: Do you have any connection limit? 
 customer: Make sure that connection limit is 1. 
 agent: Do you have any other specifications? 
 customer: I prefer to travel in economy class. 
 agent: Sorry, there are no flights found on given dates. 
 customer: No issues. Thank you for checking. 
 agent: Thank you for reaching us.

Ex Output:
no_flight