Hello.
Hello, how may I help you for the day?
I want to change my existing reservation, my music concert got postponed. Can you please help me out with that?
Sure, we are here to help you.
Thank you for accepting my request.
May I know your good name to check your reservation status?
I have reserved it on the name of Betty Jackson.
Ok, please be on hold.
Sure.
Sorry, we did not find any reservation on your name.
Oh! No issues, I think I have done a wrong reservation. Thank you for checking.
Thank  you for choosing us with a query.