Hello. I am Mark Davis.
 Hello, how can I assist you today?
Please book me a flight ticket with in price 500.
Sure, I am perky to help you. May I know on what dates would you like to travel?
I would start on 11/01 and return on 11/03 as I have a doctor appointment in between these dates.
Kindly assign your boarding and landing points?
My origin is DEN and destination is MSP.
Thank you for providing necessary details, please stand by I will check and revert to you.
ok.
 Thank you for waiting, we did not find any flights matching your credentials.
It's Ok, thanks for the  information.
Thank you for approaching us.