Weeks ago I purchased 2 specified seats to sit with my daughter. Checking in the day before I confirmed my seats. Printing the boarding pass arriving for the first leg at FLL showed the seats I purchased as expected. Deplaned at RDU and waited at the gate to re-board. Got on the plane and settled into our seats and another passenger said I was in the wrong. I showed her my boarding pass. Turns out, I was moved to a different seat to make room for this passenger, but my daughter wasn't moved. The other passenger said she was a Delta employee, which makes this even more.l fishy. Due to turbulence only water was handed out there was no other service or snacks provided.