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
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Question: customer: Hello, I am George Baker. 
 agent: Hello, how can I aid you? 
 customer: I would like to attend a meeting with my client at Washington, IAD. Can you please help me in booking on 12/14 and 12/16? 
 agent: Sure, may I know your source airport? 
 customer: My source point is Denver, DEN. 
 agent: Let me know your connection limit. 
 customer: I need a connected flight. 
 agent: Sorry, no flights found with your given dates. 
 customer: Ok, no problem. Thank you. 
 agent: Thank you for choosing us.

Answer: no_flight


Question: 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.

Answer: no_reservation


Question: 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.

Answer:
book