Hello, I am Paul Carter.
Hello, how may I aid you?
I want to change my existing reservation due to some health issues. Can you help me in this?
Sure, please wait for a while.
Ok.
Thanks for being so patience. I have checked in reservation list to change your ticket, but could not find any reservation with your name.
It's alright, not a problem. Thank you for your information.
Thanks for choosing us, have a great day.