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

Q: customer: Hi. 
 agent: Hello. How can I assist you at this moment? 
 customer: Please make a reservation with the name of Nicole Martin from PHX. 
 agent: Sure, I will assist you with that. Can you please mention your preferable travel dates? 
 customer: I want to travel on Dec 20 and return back on Dec 22. 
 agent: May I know your destination airport code name? 
 customer: Destination airport code is BOS. 
 agent: May I know your connection limit for this trip? 
 customer: I need a single connecting flight. 
 agent: Do you have any another specifications? 
 customer: I prefer to travel in economy class. 
 agent: Is there any additional preferences do you have? 
 customer: No. 
 agent: Ok, please hold on a moment. 
 customer: Sure. 
 agent: AA flight available with connection limit 1 and fare is 100, shall I confirm this economy class flight? 
 customer: Yes, please confirm it. 
 agent: Your flight ticket is booked successfully, flight number is 1026. 
 customer: Thank you for the help. 
 agent: You are welcome Nicole Martin.

A: book
****
Q: customer: Hello, my name is David Thompson. 
 agent: Hello David,. How can I help you now? 
 customer: Due to sudden change in weather where I wanted to visit, I need to cancel the ticket. 
 agent: Ok sure, please wait a moment. Thank you for waiting. Sorry David, no reservation is found under your name. Thank you for choosing us. 
 customer: Ok that's fine, thank you for giving a instantaneous response. 
 agent: You are welcome, have a good day.

A: no_reservation
****
Q: customer: Hi. 
 agent: Hello. How can I help you today? 
 customer: I am Paul Wilson. I am planning to travel from IAD to MSP, can you please help in that? 
 agent: Sure, can you please provide your travelling dates to proceed further? 
 customer: My date of travelling is on 06/04 to 06/06. 
 agent: Wait a moment please. 
 customer: sure, but I want to travel in direct flight. 
 agent: Paul Wilson, there are no direct flights available on this route. 
 customer: That's ok, thanks for helping me. 
 agent: Thank you for contacting us.

A:
no_flight
****