Hello.
user
Hello.
assistant
I am Donna Hall.
user
How can I help you out?
assistant
I need to change my existing reservation, Can you please help me with that?
user
Sure. Can you please wait for a minute?  I will check the reservation list and revert to you.
assistant
Sure.
user
Thanks for your time. I have gone through the reservation list recorded in our database, but we did not find your name.
assistant
Ok, no problem. Thanks for your information.
user
Thank you for choosing us, Have a great day.
assistant