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. 
 agent: Hello. How can I help you? 
 customer: I am planning to visit Philadelphia, can you please book me a ticket from LAS to PHL? 
 agent: Sure, I will help you. Can you please share your travel dates? 
 customer: My preferable journey dates are from 03/17 to 03/19. 
 agent: Please wait a moment. 
 customer: Sure. 
 agent: Hawaiian airlines are providing service on your route with 1 connection and fare is 100. Can I proceed? 
 customer: Please book my ticket with the name Margaret King. 
 agent: Ok. Your booking is done with flight 1012. 
 customer: Thank you for booking my ticket. 
 agent: Thank you for choosing us.

Answer: book


Question: customer: Hi, I am Kevin Williams. 
 agent: Hello, how may I aid you? 
 customer: I want to attend a business meeting at New York, NY-LGA, can you please book me a ticket from Washington, DC-DCA? 
 agent: Sure, may I know your travel dates? 
 customer: My travel dates are from 01/29 to 01/31. 
 agent: Do you have any specifications? 
 customer: My price limit is 500. I want a single connection in between my journey. 
 agent: OK, please wait a moment. 
 customer: Ok. 
 agent: Sorry, there were no flights found on your route. 
 customer: No problem, thanks for your information. 
 agent: Thank you for reaching us.

Answer: no_flight


Question: customer: Hello. 
 agent: Hello, how can I aid you today? 
 customer: Can you help me in changing my recent reservation? 
 agent: Sure, for further proceeding to change your reservation. May I know your name? 
 customer: I am Charles Carter. 
 agent: Please wait a moment. 
 customer: Sure. 
 agent: We are regret to inform you that there is no active reservation on your name in our data. 
 customer: Its ok, thank you. 
 agent: Thanks for reaching us.

Answer:
no_reservation