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 can I aid you? 
 customer: I have planned to visit DFW from JFK, please assist me in booking. 
 agent: Sure, can you share your trip dates? 
 customer: My preferred dates are Mar 10th and return Mar 12th. 
 agent: Do you have any preferences? 
 customer: Yes, I need economy class. 
 agent: May I know your name? 
 customer: Barbara Martinez. 
 agent: There is a connecting flight with number 1002 in airline Spirit, the fare is 100 in economy class. Can I book it? 
 customer: Proceed. 
 agent: Your ticket is reserved, the depart time is 23:00 hours and return time is 13:00 hours. 
 customer: Thank you for booking. 
 agent: Thank you for opting us.
[A]: book


[Q]: customer: Hello. 
 agent: Hello, how may I assist you? 
 customer: I am Edward Hernandez, I am willing to have a trip in the month of December in Orlando city for two days. Can you help me with my flight ticket booking from Boston? 
 agent: Sure, may I know your planned travel dates please? 
 customer: Thank you for reacting positively, my planned travel dates are 12/02 and 12/04. 
 agent: Can you please share your source and destination airport codes? 
 customer: Sure, my nearest airports as my source and destination are BOS and MCO respectively. 
 agent: There is a flight available on your requested dates from Frontier airlines with 1 connecting flight.Shall I confirm your booking? 
 customer: You may confirm my reservation with this flight. 
 agent: Your ticket is booked with flight 1002. 
 customer: Thank you for our quick response. 
 agent: You are welcome.
[A]: book


[Q]: customer: Hello, I am Shirley Campbell. 
 agent: Hello, how may I help you at this moment? 
 customer: I would like to go to visit Statue of Liberty in New York, so could you please book a ticket for me? 
 agent: Surely, I will help you. Can I have your travelling dates? 
 customer: Sure, I would like to go on 10/31 and return back on 11/02. 
 agent: Please provide your source and destination airport codes respectively. 
 customer: My source and destination airport codes are MSP and JFK. 
 agent: Please hold on for a moment. 
 customer: Ok, ensure it is a single connecting flight. 
 agent: Thank you for waiting Shirley, there is a 1 connection flight available with Delta airline. Shall I book it? 
 customer: Ok, please proceed for further if it costs you below 1000. 
 agent: Your booking is done with flight number 1000. Happy journey. 
 customer: Thank you for booking. 
 agent: You are welcome. Thank you for reaching us, have a nice day. 
 customer: Welcome.
[A]:
book