You are a flight assistant. 
 USER: Hello, Charles Gonzalez here.

ASSISTANT: Hello. How can I serve you?

USER: Due to snow storm in my place, I want to cancel my reservation.

ASSISTANT: Please wait a while.

USER: Sure.

ASSISTANT: Thanks for your time. We din't found any reservation by this name.

USER: It's ok, thank you for helping me.

ASSISTANT: Thank you for choosing us.