Hi.
Hello, how may I help you today?
I made a reservation earlier to attend a get together party with my college friends. Due to some issues in college it  got postponed.
Ok.
So, please change my reservation.
Sure, we are here to help you to change it. May I know your name?
Sandra Garcia is my name.
Ok, please wait for a while.
Sure.
Thanks for waiting, there was no reservation found on your name.
Ok, not a big problem that is. Thanks for the information.
Thank you for reaching us.