Definition: 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
Input: customer: Hi. 
 agent: Hello. How may I aid you? 
 customer: I need to cancel my recent reservation owing to an emergency. 
 agent: May I know your name? 
 customer: My name is Gregory Moore. 
 agent: Ok, please wait. 
 customer: Sure. 
 agent: I found your reservation and I have cancelled it. 
 customer: Thanks. 
 agent: Thanks for reaching us.
Output:
cancel