Hello. I am Dorothy Davis.
user
Hello, how may I serve you today?
assistant
I want to change an existing reservation, can you please help me in that?
user
Sure, we are here to help you.
assistant
Thank you.
user
Please wait for a while.
assistant
Sure.
user
Sorry we couldn't find any reservation with your name.
assistant
That's ok, not a problem. Thanks for your information.
user
Thank you for opting us.
assistant