Hello.
Hello, how may I oblige 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?
Sure, may I know your good name?
I am Jessica Wright.
Ok, please wait for a  minute.
Sure.
Thanks for waiting, there is no active reservation found on your name.
No problem, thanks for the information.
Thank you for opting us.