Hello.
Hello, how may I serve you today?
I have to change  my reservation due to  my planned event got postponed. So  please  help me with that.
Sure, we are here to help you.
Thank  you.
May I know your name please?
Sure, please check the  reservation with  my name Susan Martin.
Ok, please be on hold.
Sure, take your time to check.
Sorry, we could not find any reservation on your name in our database.
Oh! It  may  not be booked  properly. Anyway, thank you for your time.
Thank you for approaching us.