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 assist you at this moment? 
 customer: I need to cancel my reservation as I need to stay back in own city, due to my house has collapsed by Floods. 
 agent: May I know your name to track your details? 
 customer: Sure, I am Patricia Roberts. 
 agent: Ok, please give me a minute. 
 customer: Sure. 
 agent: Thanks for your time, no reservation was found based on your name. 
 customer: Ok, Thank you for your service. 
 agent: Thank you for consulting us.
[A]: no_reservation


[Q]: customer: Hello, my name is Katherine Miller. 
 agent: Hello, Katherine Miller. How can I assist you? 
 customer: I am planning to spend my vacation holidays with my brother, so I need to make a flight reservation. 
 agent: OK, what is your exact destination and when do you want to go? 
 customer: My destination airport is PA-PHL, and my travelling dates are departure on 03/20 and arrival on 03/22. 
 agent: Let me know your source point. 
 customer: My source airport is San Francisco, CA-SFO. 
 agent: Sorry to inform, no flights are found regarding to your specifications. 
 customer: That's not a problem, thanks for your information. 
 agent: Thanks for choosing us. Have a great day.
[A]: no_flight


[Q]: customer: Hello, I am Jack Perez. 
 agent: Hello. How can I help you? 
 customer: I would like to visit Statue of Liberty in New York, so could you please book a ticket for me? 
 agent: Sure. I will help you to book a flight, can you please provide me your travelling dates? 
 customer: Sure, I would like to go on 11/09 and return back on 11/11. 
 agent: Ok, please share me your travelling airport codes. 
 customer: My source and destination airport codes are ORD and LGA. 
 agent: Give me a moment. 
 customer: Ok, ensure it is a single connecting flight. 
 agent: Sorry, there is no flight is found on your route with single connection. 
 customer: That's ok, thank you for checking. 
 agent: Welcome. Thank you for choosing us.
[A]:
no_flight