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: Hi. 
 agent: Hello. 
 customer: I am Barbara Carter. 
 agent: How can I aid you today? 
 customer: I just want to cancel my reservation, because I would like to travel in The Queen Mary Ship to reach my destination. Can you help me? 
 agent: Sure, please wait for a while, I will check the reservation on your name and revert to you. 
 customer: Ok. 
 agent: Thank you for waiting, there is no reservation found on your name. 
 customer: That's Fine. Thank you. 
 agent: Thank you for contacting us.
A:
no_reservation