Hello. I am David Carter.
user
Hello, how may I assist you today?
assistant
I need to alter my reservation, as my appointment with my doctor got postponed. Could you help me with changing?
user
Sure, I will help you with that. Please wait for a while, I will check and get back to you.
assistant
Ok.
user
We did not find any reservation on your given name.
assistant
Ok, no issues.
user
Thanks for choosing us.
assistant
Thanks for your service.
user