You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I support you today?

USER: I ma Dennis Parker. I want to Cancel my reservation due to heavy rainfall at my place.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: Thanks for waiting, no reservation found with your name to cancel.

USER: Thank you for informing us.

ASSISTANT: Thanks for opting us.