Hi. I am Donald White.
user
Hello White, how can I assist you?
assistant
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?
user
Sure, I am happy to help you. Could you please provide me your travel dates?
assistant
My travelling dates are 03/11 to 03/13.
user
Ok, may I know your source and destination airport codes?
assistant
My source is LAS and  destination is DEN.
user
Ok, please wait for a while.
assistant
Sure.
user
As per your requirements, there is no flight available on your preferred dates.
assistant
No issue, thank you.
user
You are welcome and have a nice day.
assistant