ANC-DFW service, on AA metal, runs from June 8 through August 31, 2006. If your itinerary includes dates outside that range then flights are not currently available for booking on AA. There may be flights available later for booking other dates, but I kind of doubt it - others may have better information from their experiences.

I have noticed that seasonal service in general is usually not available for booking until 11 months from the date at the end of the range for which the service is offered. For example since the above period runs until August 31, 2006 then booking for flights during any of this period was probably not possible until earlier this month. I book flights into EGE (Vail, CO) each year and they are not available for booking until late April or early May even though service starts as early as November. I hope this info was helpful.

I don't understand your DFW-JFK conundrum as there are 3 daily non-stop 757 flights between those cities. Just out of curiosity, what reason do they give you for not being able to go non-stop between these cities?