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?
May, I know your good name?
I am Samantha Miller.
Please wait for a moment.
Sure.
 Sorry, we found no reservation on your given name.
Ok, no issues. Thanks for the information.
Thank you for choosing us.