Hello,.
Hello, how can I help you?
I am Raymond Walker. I make a reservation earlier to attend a get together party with my college friends. Due to some issues in college it  got postponed. Can you please change my existing reservation?
Sure, we are here to help you.
Thank you.
Wait for some time.
Sure.
Thanks for waiting there is no reservations found on your name.
Ok. no issue. Thank you.
Thanks for approaching us.