Hello.
Hello, how can I help you today?
Due to sudden change of my business meeting because of some technical problem, I need to change my reservation so can you help me with that?
Let me know your name to check your reservation?
I am Patrick Nelson.
Ok, please wait a moment.
Sure.
Thank you for waiting. I have checked in reservation list to change your ticket, but could not find any reservation with your name.
Sorry, we found no reservation on your given name.
Thank you for choosing us.