Hello.
user
Hello.
assistant
I am Mary Harris.
user
How can I assist you?
assistant
I am planning to change an existing reservation, due to some work. Can you please change my reservation?
user
Ok, sure. May I know your name? Sorry, I did not fine any reservation on your name to change.
assistant
That's fine. Thank you for your service.
user
Thank you for reaching us.
assistant