I have booked an international flight from India to US through British Airways. My first port of entry is DFW airport in Dallas. I have only 90 minutes layover at this airport. Is there a chance that I will be able to make it to the connecting flight to Austin (operated by American Airlines)? It's a Sunday evening layover. I called them to change the connecting flight but they could not find any seats in a later flight that day. Is there anything I can do to avoid missing the flight and getting stranded on the airport overnight?