Hello.
Hello, how may I provide assistance to you?
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 name please to check the status of your reservation?
I am David Perez.
Please wait for a moment.
Sure.
Sorry, we found no reservation on your given name.
No problem, thank you for the information.
Thank you for reaching us.