Hello. I am Patrick Roberts.
user
Hello, how may I serve you at this moment?
assistant
I want to change my existing reservation, can you please help me with this?
user
Sure, I will help you. Please wait for a moment.
assistant
Sure.
user
Sorry Patrick Roberts, there is no reservation found on your name.
assistant
Ok, no problem. Thank you for your information.
user
You are welcome, have a nice day.
assistant