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: Hi. 
 agent: Hello, how can I help you? 
 customer: Owing to an emergency, I want to cancel my reservation. Can you check whether there is any refund policy on my reserved ticket? 
 agent: Please wait a while, may I know your name please? 
 customer: Sure, my name is Charles Johnson. 
 agent: Sorry to say, there is no reservation on your name in our database. 
 customer: That's ok, thank you for checking. 
 agent: Thank you for opting us.
[A]: no_reservation


[Q]: customer: Hello. 
 agent: Hello, how may I be at your service today? 
 customer: Can you please help me to book a flight from AUS to CLT? 
 agent: Sure, I will help you in booking the ticket. May I know your travelling dates please? 
 customer: Sure, I want to travel on Feb 15 and need to return on Feb 17. 
 agent: Do you have any other specifications? 
 customer: I need a connecting flight. 
 agent: Please help me with your name for booking. 
 customer: Myself Donald Rodriguez. 
 agent: According to your information, I have found a flight with single stop over in your journey with a minimum fare of 100 with flight number 1019. Shall I proceed with this flight? 
 customer: Ok, please proceed. 
 agent: Your booking is done. 
 customer: Thank you. 
 agent: Most welcome.
[A]: book


[Q]: customer: Hello. 
 agent: Hello, how can I assist you today? 
 customer: I am Rebecca wright, I plan to visit Denver, CO-DEN to visit my friend. Can you help me to find a fight from CA-SFO? 
 agent: Sure, Can you share me your journey dates please? 
 customer: I will travel on 09/10 and return on 09/12. 
 agent: Do you need any halt in between your journey? 
 customer: Yes, I need halt in between the journey. 
 agent: We found Frontier airline with single connection under fare of 100. Shall I proceed for booking with airline number 1007? 
 customer: Sure. 
 agent: Your ticket has been confirmed. 
 customer: Thank you for booking the flight ticket. 
 agent: Thanks for connecting us.
[A]:
book