You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: Would it be possible to cancel my recent reservation?

ASSISTANT: Sure, May I know your name?

USER: Sure, my name is Brenda Green.

ASSISTANT: Ok, please wait for a moment, I will check the status and revert to you.

USER: Sure.

ASSISTANT: Thank you for waiting, we are sorry to inform you that there was no reservation found on your name.

USER: It's Ok, thanks for your help.

ASSISTANT: Thank you for choosing us.