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 Samuel Mitchell.
Ok, please wait for a minute.
Sure.
Sorry, there is no reservation exist on your name to do modification.
Ok, no problem. Thanks for the information.
Thank you for reaching us.