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 guide you today? 
 customer: I am Stephen Turner, can you assist me to book a flight from DEN to ATL? 
 agent: Sure, could you please share me with your dates of trip? 
 customer: Ok, my travel date is on 01/07 from Denver and return date is on 01/09. 
 agent: Ok, please hold on for a mean while. The flight with the connecting flight of fare 100 has found, shall I book this ticket booking? 
 customer: Ok, please the book. 
 agent: The flight with the Delta airline and flight number is 1009 has been confirmed. 
 customer: Thank you for helping me with the booking. 
 agent: You are welcome and have a happy journey.
[A]: book


[Q]: customer: Hi. 
 agent: Hello. How may I help you today? 
 customer: Can you please help me in booking flight ticket from BOS to AUS? 
 agent: Sure, I am here to help you. May I know your name please. 
 customer: I am Matthew Roberts . 
 agent: Please mention your journey dates? 
 customer: My travelling dates are 03/20 and 03/22. 
 agent: Ok, please wait a while. 
 customer: Ok, sure. 
 agent: Sorry Roberts, no flights are available on your desired route. 
 customer: Ok, fine thank you for checking. 
 agent: Thank you for reaching us.
[A]: no_flight


[Q]: customer: Hi. 
 agent: Hello, how may I serve you today? 
 customer: I want to cancel my reservation as I am not feeling good to make a trip. Can you help me with that? 
 agent: Sure, may I know your name? 
 customer: Ok, my name is Joseph Rodriguez. 
 agent: Ok, please wait for a minute. 
 customer: Sure, take your time. 
 agent: We found a reservation on your name, shall I cancel it? 
 customer: Yes, cancel it. 
 agent: Your reservation has been cancelled. 
 customer: Thank you for cancelling my reservation. 
 agent: Thank you for choosing us.
[A]:
cancel