You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, may I know your name please?

USER: Due to some issue, I would like to cancel my reservation. My name is Stephen Nelson.

ASSISTANT: Ok, please wait for a moment.

USER: Ok.

ASSISTANT: Sorry, there is no reservation found by your name.

USER: No issues. Thank you for your information.

ASSISTANT: Thank you and have a nice day.