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: Hi. 
 agent: Hello. How can I amend you now? 
 customer: I would like to cancel my reservation which was made on the name of Pamela Adams. Can you help me with it? 
 agent: Sure, we are ecstatic to help you. Just wait a moment. I will check the reservation list and let you know. 
 customer: Sure. 
 agent: Thank you for waiting, we found a reservation on your name. Your ticket was cancelled successfully. 
 customer: Ok, thank you. 
 agent: Thank you for opting us.
A:
cancel