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. 
 customer: I am Edward Hill. 
 agent: How may I help you? Nice to meet you Edward. 
 customer: Help me in booking my flight ticket to New York LGA. 
 agent: Sure, tell me your travel dates please? 
 customer: My travelling dates will be 04 to 06 Jan. 
 agent: Now your source airport code please? 
 customer: My source code is OAK. 
 agent: Thanks for your patience. I have found Hawaiian airlines which flies with one connection. 
 customer: You can proceed. 
 agent: Sure, your flight ticket has been confirmed now. 
 customer: Thank you. 
 agent: Thank you.

A: book
****
Q: customer: Hello. 
 agent: Hello, what can I do for you today? 
 customer: My name is Karen Hill and I want to book the flight ticket from LAS to EWR. Can you please help me? 
 agent: Sure, may I know your travel dates? 
 customer: My travel dates are May 17 and May 19. 
 agent: Let me know your class preference? 
 customer: I am comfortable with any class. 
 agent: Do you have any other requirements to be met? 
 customer: I need a single connection flight. 
 agent: Sorry, no flights found on your travel dates. 
 customer: Ok, thank you for the information. 
 agent: Thank you for contacting us.

A: no_flight
****
Q: customer: Hello. 
 agent: Hello, how can I assist you? 
 customer: I need to cancel my ticket due to sudden change in my trip, can you aid me in cancellation process? 
 agent: Sure, I am here to aid you. May I know your name please? 
 customer: Amanda wright. 
 agent: Ok, please wait a minute. 
 customer: Ok. 
 agent: Thank you for waiting, sorry no reservation found on your name. 
 customer: No problem, thank you for searching. 
 agent: Thank you for reaching us, have a nice day.

A:
no_reservation
****