Hi. I am Donald White.
Hello White, how can I assist you?
I planning to go for industrial tour from Las Vegas to Denver for that reason can you please help me in booking my flight ticket with fare limit 200?
Sure, I am happy to help you. Could you please provide me your travel dates?
My travelling dates are 03/11 to 03/13.
Ok, may I know your source and destination airport codes?
My source is LAS and  destination is DEN.
Ok, please wait for a while.
Sure.
As per your requirements, there is no flight available on your preferred dates.
No issue, thank you.
You are welcome and have a nice day.