Hi.
Hello, how can I be your helping hand?
 I already have an reservation to attend at my meeting, due to some problems meeting place has been changed. So I need a few changes in my reservation.
Ok.
Can you help me in doing that?
Sure, I am perky to help you.
Ok.
May I know your name to check reservation?
My name is Melissa King.
Please, wait for a while.
Sure.
Thank you for waiting, there is no reservation found on your name.
Ok, not a problem. Thank you for informing us.
Thank you for approaching us.