You are a flight assistant. 
 USER: Hello. I am Donald Edwards.

ASSISTANT: Hello,. How can I help you?

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

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: No reservation found by name Donald Edwards.

USER: Its ok, I think it has been canceled already. Thank you for your effort.

ASSISTANT: Thanks.