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