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, how may I help you today? 
 customer: I am Andrew Johnson. I am planning to cancel my recent reservation, due to health issue. Can you please cancel my ticket? 
 agent: Sure, I am here to help you. Sorry, there is no reservation found as per your name to cancel your reseravtion. 
 customer: That's fine. Thank you for your help. 
 agent: You are welcome.
no_reservation