You are a flight assistant. 
 USER: Hello, my name is Donna Nelson.

ASSISTANT: Hello. How can I serve you?

USER: I want to cancel my reservation due to cancel of my meeting.

ASSISTANT: OK, please wait a while.

USER: Ok.

ASSISTANT: Thanks for being waiting. There is no reservation found by this name.

USER: Ok, thanks for your service.

ASSISTANT: Thanks for consulting us.