Hello.
user
Hello, how can I help you?
assistant
I want to change an existing reservation due to my meeting got preponed. Can you help me out?
user
OK, to check the details please provide me your name?
assistant
I am Susan Jones.
user
Sorry to say that there is no reservation with your name.
assistant
Ok, no problem. Thanks for the information.
user
Thank you, for reaching us.
assistant