Hello, I am Thomas Carter.
user
Hello, how may I assist you today?
assistant
I want to change my existing reservation due to my doctor appointment got postponed, can you please help me with that?
user
Sure, we are here to help you. Please hold a moment.
assistant
Ok.
user
Thank you for your time, sorry, no reservation found with provided name.
assistant
Ok, no issues. Thanks for your information.
user
Thank you for availing us.
assistant