Hello.
user
Hello, how may I aid you today from my end?
assistant
I made a earlier reservation to attend a  conference, due to some political issues it got postponed. Can you please help with changing my  reservation?
user
Sure, I am here to help you out. Please provide me your name to amend it.
assistant
Thank you. And my name is Rachel Carter.
user
Sorry Rachel Carter, there is no reservation in our database.
assistant
Ok, no issue. Thank you.
user
Thank you for reaching us.
assistant