Hi. I am Mark Nelson.
Hello, how can I provide assistance for you?
I already have an reservation to attend a meeting, due to some problems meeting place has been changed. So I need a few changes in my reservation.
Sure, please wait a moment I will check your details and proceed further.
Ok.
Sorry to say, there is no reservation on your name in my database.
That's ok.
Thank you for reaching us, have a nice day.