You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I Would like to cancel my recent reservation due to some personal issues, will you help me with that?

ASSISTANT: Sure. May I know your name please?

USER: Thank you for accepting my request, myself  William Williams.

ASSISTANT: Wait for a moment please. Sorry William.

USER: Sure, I will wait. Ok, not an issue.

ASSISTANT: I could not find your flight reservation to cancel it.

USER: Thank you for your information.

ASSISTANT: Thank you.