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 best serve you today? 
 customer: I want to cancel my recent reservation which I have done last week because my trip got cancelled. Please help me out with that. 
 agent: Sure, please share me your good name. 
 customer: Myself Nicole Rodriguez. 
 agent: Please wait for a while. 
 customer: Sure. 
 agent: We found your reservation and cancelled successfully. 
 customer: That's good, thank you for your help. 
 agent: Thank you for opting us.
A:
cancel