Hey there - I had to do some schedule changes on a flight this week, moving our travel plans up a day for a family of 4 (two kids, 5 and 2). We're all confirmed in J (lie flat 757), but I could only select seats for 3 of us - I do not have one and "there are no complimentary seat assignments available." I would note that all 3 seats are also apart from each other (and all windows), so we're going to have to play a game of tetris when we get to the airport. I haven't seen the notice that seats were unavailable to assign when paying for a J ticket - just curious if this means the cabin is overbooked and what expectations I should have of the gate agent to help get us all together, vs. just asking passengers myself on-board. Thanks!