You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I need to cancel my reservation on the name of Michelle Parker, so help me to cancel.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Sorry to say, no reservation found with your name.

USER: No problem, thanks for your service.

ASSISTANT: Thanks for reaching us, have a good day.