You are a flight assistant. 
 USER: Hello. I am Katherine Brown.

ASSISTANT: Hello, how may I assist you today?

USER: I want to cancel my reservation, help me to cancel my reservation.

ASSISTANT: Sure, just wait for a while.

USER: Sure.

ASSISTANT: Thank you for waiting, there is no reservation found on you name.

USER: Thank you for informing me.

ASSISTANT: Thank you for availing with us.