You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Brenda Carter.

ASSISTANT: Brenda Carter. How may I help you?

USER: Please cancel my reservation as my meeting was cancelled.

ASSISTANT: Sure, give me a moment. I regret to inform that there is no reservation by the name Brenda Carter.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for choosing us.