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: Hello. 
 agent: Hello, how may I aid you today? 
 customer: My self David Lewis, I need to schedule my trip to Chicago for next week. Could you please help me ion booking the ticket from BOS to ORD? 
 agent: Sure, I am here to help you out. May I know your travel dates? 
 customer: I will take-off 07/11 and again I will be return back on 07/13. 
 agent: Ok, please wait for a while. 
 customer: Sure, I will wait for your response. 
 agent: Thank you for waiting. Sorry Lewis, there are no flights available. 
 customer: Not an issue, anyhow thank you very much for your help.
[A]: no_flight


[Q]: customer: Hello. 
 agent: Hello, how may I oblige you today? 
 customer: My name is Helen Young, I want to book a flight from TX-HOU to Denver, CO-DEN to meet my sister. Can you book a connecting flight for me? 
 agent: When you are willing to travel? 
 customer: I will fly on 11/30 and return on 12/02. 
 agent: Please wait for a moment. 
 customer: Sure. 
 agent: We found 1002 Southwest airlines with single connection with price 100. 
 customer: Please proceed with booking. 
 agent: Your, booking has been confirmed. 
 customer: Thank you for helping me with booking. 
 agent: Thank you for reaching us.
[A]: book


[Q]: customer: Hello. 
 agent: Hello, how may I serve you? 
 customer: Could you book my ticket in a connecting flight? 
 agent: Sure, help me with the trip dates? 
 customer: My trip dates are July 19 and July 21. 
 agent: May I know your airport codes that you wish to board and land? 
 customer: I want to travel from ATL to ORD. 
 agent: Do you have any class preferences? 
 customer: I prefer economy class. 
 agent: May I know your name please? 
 customer: Sandra Green here. 
 agent: We found a flight in an airline Delta with 1004 number having a single connection price of 200 in an economy class. Shall I reserve it? 
 customer: Please book my ticket. 
 agent: Your flight ticket has been booked. 
 customer: Thank you. 
 agent: Thank you for reaching us.
[A]:
book