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