Hello, I am Edward Evans.
Hello, how can I best assist you now?
I want to make a round trip to Houston, IAH. Could you help me with booking  a flight ticket?
Do you have any price limit?
Make sure the price limit is under 200.
When do you plan your trip?
My travel dates are 12/22 to 12/24.
What is your source airport?
Source airport code is HOU.
Ok, please wait a moment.
Sure.
Sorry to inform you that there is no flight found on your dates.
Thanks for the information.
Thanks for contacting us, wish you a good day.