Folks, the OP asked for a booking engine...Matrix is a great tool, but book tickets it does not. I'm trying to book a TATL/intra-EU itin right now and while Matrix does a nice job of showing some pretty perfect Skyteam combos, delta.cr@p keeps returning with a dumb message saying "these cities are not served at this current time" and, gasp, even af.us and klm.com come back with much higher fares than Matrix. The lack of integration across the alliance is pretty astonishing.