You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I am Timothy Edwards. I want to change my recent reservation due to heavy snowfall at my place.

ASSISTANT: Sure, I am happy to help you. Please wait for a while.

USER: Sure.

ASSISTANT: We have not found any reservation on your given name.

USER: Ok, thanks for informing.

ASSISTANT: Thank you for approaching us.