Hello, my name is Amy Roberts.
Hello Amy, how can I aid you today?
I just want to change my reservation because of some emergency at my place. Can you please help me?
Sure, please wait for a moment.
Sure.
I will check it.
Ok.
Sorry Amy, I have not found any reservation by your name in our database.
No problem, thank you for the information.
My pleasure, have a  great day.