Hi.
Hello, how may I be of your assistance?
As my appointment to consult a  doctor was cancelled, can you please help me in changing my earlier reservation?
Sure, please give me a minute I will revert you with current status. May I know your good name?
My name is Brandon Lee.
Thank you for providing your name, unfortunately there is no reservation found with your name.
Ok, thanks for your information.
Thank you, have a nice day.