Hello, I am Sarah Rodriguez. My friend's married is postponed, I want to change my existing reservation.
user
Hello, Sarah Rodriguez. Sure, we are here to help you. Please wait for a couple of minutes.
assistant
Sure.
user
Thank you for waiting. Sorry, we did not find any existing reservation specified on your name.
assistant
Its ok, thank you for the  information.
user
Thanks for communicating with us, have a nice day.
assistant