You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: My college seminar has been postponed.Can you please help me for cancelling the recent reservation?

ASSISTANT: Sure, may I know your name please?

USER: Sure, my name is Dennis Johnson.

ASSISTANT: Thank you Dennis.Please be on hold.

USER: Ok.

ASSISTANT: Dennis, there is no flight found under your name.

USER: Ok, It's fine.

ASSISTANT: Thank you for contacting us.Have a good day.

USER: Thank you for your information.