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: Hello. 
 agent: Hello. 
 customer: I was fallen ill due to which I would like to cancel my recent reservation. Can you help me? 
 agent: Oh! that's sad, may I know your name for checking the status of your ticket? 
 customer: My name is Kimberly Edwards. 
 agent: Kimberly Edwards, can you give me a moment to check? 
 customer: Sure. 
 agent: Sorry, no reservation found by your name. Are you sure you have booked reservation by our airlines? 
 customer: Yes, I am sure but my brother has made cancellation on behalf of me. 
 agent: Do you need help with any other information, please let me know? 
 customer: No, thank you for the information. 
 agent: Thank you for choosing our services. Have a great afternoon.
no_reservation