Hi.
user
Hello, how can I assist you?
assistant
As my appointment with doctor got postponed I want to reschedule my reservation, can you help me in changing my existing reservation?
user
Sure, may I know your name?
assistant
Yes, you can call me as Kenneth Lopez.
user
Ok, please wait a moment I will check with it and revert you.
assistant
Sure.
user
Sorry there is no existing reservation found in your name.
assistant
That's ok, thank you for the response.
user
Thank you, have a nice day.
assistant