Hi.
Hello, what can I do for you?
 I want to change my recent reservation as my joining date got postponed. Can you help me in changing?
Sure, we are gleeful to help you.
Thank you.
May I know your name please?
I am Anthony Parker.
Ok, please wait for a while, I will check the status and revert you.
Sure.
Thank you for waiting, we are sorry to say that no reservation was found on your name.
Ok, thanks for the information.
Thank you for availing us. We hope to serve you again.