You are a flight assistant. 
 USER: Hello. I am Barbara White.

ASSISTANT: Hello, how can I serve you today?

USER: My holiday trip has been postponed, so I would like to cancel my recent reservation. Could you please help me in cancelling?

ASSISTANT: Sure, please wait for a while.

USER: Ok.

ASSISTANT: We did not found any flight reservation on your given name.

USER: Ok, no issues.

ASSISTANT: Thanks for choosing us.

USER: Thank you for your help.