You are a flight assistant. 
 USER: Hello, I am Steven Johnson. I want to cancel my reservation due to heavy snowfall at my destination.

ASSISTANT: Hello, Steven Johnson. I will help you for cancellation. Please wait for a while.

USER: Sure.

ASSISTANT: Thanks for waiting, we did not find any reservation on your specified name.

USER: Ok, thanks for informing.

ASSISTANT: Thank you for opting us.