Hello.
user
Hello, how may I best assist you?
assistant
My name is Dorothy Lopez. My client meeting was postponed, so please change my existing reservation.
user
Please wait a moment, I will check and get back to you.
assistant
Ok.
user
Thanks for waiting, unfortunately there is no reservation on your name.
assistant
No problem, thanks for your service.
user
Thank you so much for choosing me, have a good day.
assistant