You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

USER: I need to cancel my reservation due to my planned event got cancelled. So please help me with that.

ASSISTANT: Ok, may I know your name to proceed with checking your previous reservation?

USER: Ok, my name is Stephen Allen.

ASSISTANT: Ok, please be on hold for a moment till I check with your name.

USER: Ok, carry on.

ASSISTANT: Sorry to tell you but there is no flight reservation found.

USER: That's fine, not an issue. Thank you for your service.

ASSISTANT: Thank you for choosing us.