Hello.
user
Hello. How can I assist you now?
assistant
I want to change my existing reservation. Could you help me with that?
user
Sure, I will help you with that. Can I have your  good name  please to check your reservation status?
assistant
Virginia Gonzalez.
user
Ok,  please wait a  moment.
assistant
Ok.
user
Sorry Virginia Gonzalez, no reservation has found under your name to change.
assistant
That's ok, no problem. Thank you.
user
Thank you for choosing us, have a good day.
assistant