Hello.
user
 Hello, how may I oblige you today?
assistant
Actually my Tennis competition is postponed, so that I want to change my existing reservation. Can you help me?
user
Sure, for proceeding this process we need your name.
assistant
Sure, I am Brenda Evans.
user
Sorry we couldn't find any reservation on your name.
assistant
Ok, no problem. Thank you for your information.
user
Your welcome.
assistant