Hello.
user
Hello, how may I assist you today?
assistant
I made  a earlier reservation to attend my friend marriage, due to some issues it got postponed. Can you please change my reservation?
user
Sure, may I know your name for the changing process?
assistant
My name is Jack Clark.
user
Sorry as per your concern I can not amend your reservation, as your reservation is not found as per our records.
assistant
Ok, not an issue. Thank you.
user
Welcome, thank you for opting us.
assistant