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: Hello. 
 agent: Hello,. 
 customer: I want to cancel my ticket due to family problems. 
 agent: Please provide your name? 
 customer: My name is Laura Martinez. 
 agent: Reservation is found. Your reservation is cancelled. 
 customer: Thank you. 
 agent: Thanks.
Solution:
cancel