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