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
Input: customer: Hi. 
 agent: Hello. How may I help you? 
 customer: My name is Stephanie Carter. Can you please help me in cancelling my reservation? 
 agent: Sure, I will help you. Please wait a minute. 
 customer: Sure, take your time. 
 agent: I have found your reservation. 
 customer: Ok, please cancel my reservation. 
 agent: Your reservation is successfully cancelled. 
 customer: Thank you. 
 agent: Most welcome.
Output:
cancel