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

customer: Hi, myself Jack Thomas. 
 agent: Hello Jack, how may I help you? 
 customer: I need your help in booking my flight ticket from ATL to IAD, can you please help me? 
 agent: Sure, I can help you. May I know your journey dates? 
 customer: Sure, I would like to depart on 01/17 and return on 01/19. 
 agent: Please give me a moment. 
 customer: Sure. 
 agent: Spirit airlines with flight 1015 is available on your route. 
 customer: That's fine for my journey, you can proceed for booking the ticket. 
 agent: Your ticket is reserved. 
 customer: Thank you very much for your help. 
 agent: Thank you for choosing us.
book

customer: Hi. 
 agent: Hello, how may I aid you? 
 customer: Can you book a connecting flight to Oakland? 
 agent: Sure, could you please provide your willing dates to travel? 
 customer: My travel dates would be from 10/01 to 10/03. 
 agent: Ok, may I know the code of airport to search for the flight? 
 customer: I am planning a business trip and my airport codes are MCO to OAK. 
 agent: Ok, please wait a moment. 
 customer: Sure. 
 agent: Ok, there is a flight 1019 in AA airline matching your details with price 100. Shall I proceed? 
 customer: I am fine with this flight and you can book it. 
 agent: May I know your name to book the ticket? 
 customer: Nicholas Lee here. 
 agent: Ok, your booking is done. 
 customer: Thanks for your help. 
 agent: You are welcome.
book

customer: Hi. 
 agent: Hello. How may I help you? 
 customer: Can you help me in cancelling my recent reservation, as my exam is postponed? 
 agent: Yes, can you tell me your name? 
 customer: I am James Scott. 
 agent: Sorry to inform you that there is no reservation found on your name. 
 customer: That's ok, thank you. 
 agent: Thank you for reaching us.
no_reservation