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