You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I am Brain Mitchell.

ASSISTANT: Ok.

USER: As my leaves in my office has been cancelled, I would like to cancel my reservation. Help me in cancelling my reservation.

ASSISTANT: Ok, Brian please wait for a while.

USER: Sure.

ASSISTANT: I did not fine any reservation.

USER: Its ok, thank you for your assistance.

ASSISTANT: Thank you for reaching us.