Hello, I am Joshua Davis.
user
Hello. How can I assist you?
assistant
 I make a reservation earlier to attend a get together party with my college friends. Due to some issues in college it is postponed.
user
Ok.
assistant
Can you help me in changing my existing reservation?
user
Yes, I can help you with that. Sorry to inform you that there is no reservation found on your name.
assistant
It's ok, not an issue.
user
Thank you for opting us.
assistant
Thank you for your information.
user