Hi.
Hello, In what way shall I assist you for the day?
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 Donna Thompson.
Ok, please wait for a minute.
Sure.
Sorry to say that, there is no active reservation found on your name.
No problem, thanks for the information.
Thank you for availing us.