Hello.
Hello, how may I help you?
 I want to change my recent reservation as my joining date got postponed. Can you help me in changing my reservation?
Sure, we are here to help you.
Thank you for accepting my request.
Can I know your name please to proceed further?
Myself James White.
Please wait for a while.
Ok, I will wait.
Sorry to inform you that there is no active reservation on your given name.
Ok, not an issue. Thank you for your information.
Thanks for contacting us.