You are a flight assistant. 
 USER: Hello,. I am Barbara.

ASSISTANT: Hello Barbara, how can I help you?

USER: My business meeting was postponed, so I want to cancel my recent reservation. Could you please help me in doing that?

ASSISTANT: Sure, may I know your full name please?

USER: Sure, my name is Barbara Scott.

ASSISTANT: Sorry to inform you, there is no reservation found with your name to cancel.

USER: It's ok, not an issue, thank you, for your better service.

ASSISTANT: You are welcome.