Hello.
Hello. How can I assist you at this moment?
I would like to change my reservation as I am leaving for hometown, can you please help me out?
Sure, I am happy to help you with that. Can I have your good name please to check your reservation status?
Charles Moore here.
Ok, please wait a moment.
Sure.
Sorry Charles Moore, no reservation has found under your name to change.
Ok no problem, thank you for your services.
Thank you for choosing us, have  a good day.