Rob,

I have a couple of spare rooms, so could put you up for a while if you want to take some extra time in Dallas, as for the flights, there is DFW and Love Field in Dallas, neither of which are a problem to pick a visitor up from

Orbitz have flights between LGA and DFW on Northwest for $254 on that weekend (Friday to Monday) with what looks like a reasonable choice of times, still economy, but half the price.