Hello.
user
Hello, how may I serve you at this moment?
assistant
I want to change my existing reservation. Could you help me with that?
user
Sure, we are here to help you. May I know your name please?
assistant
Elizabeth Smith.
user
Ok, please wait for a while.
assistant
Ok.
user
Sorry we could not find any reservation against your name.
assistant
That's ok, no problem. Thank you.
user
Thank you for choosing us.
assistant