Hello.
Hello, how may I aid you?
Please help me out in changing my recent resevation.
Sure, I am here to help you out. May I know  your name please?
My name is Ryan Jackson.
Ok, please wait for a while, let me check your reservation status.
Ok.
Sorry, there is no reservation found on your name in our records.
Its ok, no issues. Thank you for the information.
Thank you for choosing us.