Detailed Instructions: 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
Problem:customer: Hi. 
 agent: Hello, how may I serve you today? 
 customer: Owing to an emergency I want to cancel my reservation, can you help me? 
 agent: Sure, can you please provide your name? 
 customer: I am Gregory Adams. 
 agent: Hold on a minute. 
 customer: Sure. 
 agent: We found your reservation and it has been cancelled successfully. 
 customer: Thank you for your help. 
 agent: Thank you for choosing us.
Solution:
cancel