Hello.
user
Hello.
assistant
I am Dennis Lewis.
user
How can I help you Dennis?
assistant
I  want to change my reservation due to my office work was scheduled on the same day, so help me on that?
user
Oh! that's sad, let me go back and check with your previous booking.
assistant
Ok.
user
Dennis Lewis, there is no reservation by your name. Sorry for the inconvenience.Can I help you with any other information, let me know?
assistant
Oh! that's my bad luck, any way thank you for your help.
user
That's great of you, keep reaching us for your bookings in future as well.
assistant
No thanks, I am ok with this.
user
You are welcome.
assistant
Ok , thank you.
user