Hi. Margaret Turner here.
user
Hello. How can I assist you?
assistant
Reserve a flight ticket from ATL to IAH as I am planning a vacation in Houston.
user
Sure, can I  know your planning dates?
assistant
My preferable dates for travel are 03/30 to 04/01.
user
Sorry Turner, there is no flight available on your requested dates.
assistant
Ok, not a problem. Thanks for your information.
user
You are welcome.
assistant