Hello.
Hello. How may I help you?
I Would like to cancel my recent reservation due to some personal issues, will you help me with that?
Sure. May I know your name please?
Thank you for accepting my request, myself  William Williams.
Wait for a moment please. Sorry William.
Sure, I will wait. Ok, not an issue.
I could not find your flight reservation to cancel it.
Thank you for your information.
Thank you.