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
One example is below.
Q: customer: Hi. 
 agent: Hello. How can I help you? 
 customer: I would like to change my existing reservation as my plan to go for a holiday trip got postponed. Can you please help me with this? 
 agent: Sure, may I know your name please? 
 customer: My name is Anthony Phillips. 
 agent: Please wait a moment. 
 customer: Sure. 
 agent: Unfortunately there is no reservation found with your given name. 
 customer: Not a problem, thank you for checking. 
 agent: Thank you for choosing us.
A: no_reservation
Rationale: Here the customer has not asked for any booking, he just wanted to update his already booked flight, so the status would be no_reservation
Q: customer: Hi. Amanda Thompson here. 
 agent: Hello, how may I assist you today? 
 customer: I want to book a flight ticket from DEN to MCO. Can you help me in that? 
 agent: Sure, we are here to help you. 
 customer: Thank you. 
 agent: Could I have your journey dates, please? 
 customer: My trip dates are May 06 to May 08. 
 agent: May I know your depart and arrival timings? 
 customer: My depart should be in the afternoon. 
 agent: Do you have any class preference? 
 customer: I don't have any class preference. 
 agent: Is there any more preferences? 
 customer: I need a connecting flight. 
 agent: Ok, please wait for a moment. 
 customer: Sure. 
 agent: We found a JetBlue airline , price is 200 in economy class, the departure time is 14:00 PM. Shall I proceed? 
 customer: You can proceed. 
 agent: Your ticket has been confirmed with a connecting flight 1001. 
 customer: Thank you for booking. 
 agent: Thank you for reaching us.
A:
book