You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, how can I help you?

USER: I need to cancel recent reservation. My name is Mary Hall.

ASSISTANT: Sure, May I know your name please.

USER: It's Mary Hall.

ASSISTANT: Thank you. We found reservation with your name, Shall I proceed to cancel?

USER: Yes.

ASSISTANT: Your reservation has been cancelled.

USER: Thanks.