Hello, I am Frank Hill.
user
Hello, how can I help you today?
assistant
I need to alter my reservation, as my appointment with my doctor got postponed. Could you help me in changing my existing reservation?
user
Sure, please wait a moment.
assistant
Ok.
user
Sorry to say, no reservation found with your name.
assistant
Ok, no issues. Thanks for your service.
user
Thanks for reaching us, have a good day.
assistant