Hello.
user
Hello. How may I help you?
assistant
My name is Karen Smith. I would like to change an existing reservation where my appointment with our doctor got changed.
user
Sure, may I know your name? Ok, please wait a minute.
assistant
Sure, take your time.
user
Sorry, there is no active reservation found under your name in our records.
assistant
No issues,  thank you for the information.
user
Most welcome.
assistant