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
Q: customer: Hello. 
 agent: Hello. How may I serve you now? 
 customer: I am Amanda Walker, I want to cancel my ticket has my plan to visit New York for reunion which is being cancelled. Can you can my reservation? 
 agent: Sure, I will help you. Please wait a while. 
 customer: Sure. 
 agent: Thank you for your time. We found a reservation in your name and it has been cancelled. 
 customer: Ok, thank you for helping me. 
 agent: Thank you for contacting us.
A:
cancel