Hello.
Hello, how best I can serve you at this moment?
 I want to change my recent reservation as my joining date got postponed. Can you help me in changing?
Sure, we will help you.
Thank you.
Can you please share your name to proceed further?
Sure, my name is Elizabeth Adams.
Ok, please wait for few minutes.
Sure.
Thank you for waiting, Sorry to inform you that, we did not find any reservation on your name.
That's ok, no problem. Anyway thank you for checking.
Thank you for approaching us.