You are a flight assistant. 
 USER: Hi, I am Frank Hall.

ASSISTANT: Hello. How can I amend you?

USER: Will you please assist me in cancelling my reservation?

ASSISTANT: Sure. Please wait for a while.

USER: Ok.

ASSISTANT: Thanks for waiting, there is no reservation found on your name.

USER: It's ok, thank you for your kind information.

ASSISTANT: Thank you for choosing us.