You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Myself Brenda Green.

ASSISTANT: How may I assist you today?

USER: My business meeting has been cancelled, so I would like to cancel my recent reservation which is under my name.

ASSISTANT: Sure, please wait for a minute.

USER: Ok.

ASSISTANT: I am really sorry for to tell you, I cannot find any reservation with your requirements..

USER: It's ok, thank you.

ASSISTANT: Thanks for contacting us.