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, I am Jason Hill. 
 agent: Hello. How can I serve you? 
 customer: I want to visit Fenway Park at Boston, MA - BOS, can you help me in booking a ticket from Houston, TX - IAH? 
 agent: Sure, I will help you out. May I know your travelling dates? 
 customer: My travelling dates are from 10/15 to 10/17. 
 agent: Do you need any connection limit? 
 customer: Yes, I need a lay by. 
 agent: Give me a minute. 
 customer: Sure. 
 agent: Thanks for your time. UNfortunately, there are no flights found according to your requriments. 
 customer: Ok, no issues. Thank you for your information. 
 agent: Thanks for choosing us.
[A]: no_flight


[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: Hi,. 
 agent: Hello. How can I serve you? 
 customer: Due to some health issues, I could not attend my documentation.So I would like to change my existing reservation. 
 agent: Ok. 
 customer: Can you please help me in change my reservation? 
 agent: Sure. 
 customer: Thank you. 
 agent: May I know your good name? 
 customer: My name is Amanda Wright. 
 agent: Please wait. 
 customer: Sure. 
 agent: Thanks for waiting. There is no reservation found on your name. 
 customer: No problem, thank you for the information. 
 agent: Thank you.
[A]:
no_reservation