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
Q: customer: Hello. 
 agent: Hello, how can I aid you for today? 
 customer: Owing to emergency, I need to cancel my recent reservation. Please help me with that. 
 agent: I am here to help you about that. Can you please provide your name for checking the reservation status? 
 customer: I am Rebecca Miller. 
 agent: I have found reservation with your name and as per your interest I have cancelled it. 
 customer: Thank you for your help. 
 agent: You are welcome, thank you for choosing our service.
A:
cancel