I just booked my families return flight on Airtran. I wanted to purchase seats 25A, 25B, 26A, 26B. When I looked on the website these seats were available, however, when I went to purchase them both 25B and 26B were unavailable. So I ended up purchasing seats 25C,D,E,F. I just went back into the site and it is showing both 25B and 26B available, so I tried to change our seat selections. Sure enough, when I logged in both 25B and 26B were unavailable. Why would it be showing them unavailable when I log in and available when I am viewing them from the Airtran website. Thanks!