Hi, I have booked a flight for brother + 3-yr old niece on a DEN-EWR route and the seatmap has been unavailable for weeks. I'm starting to get nervous that the plane will fill up for summer travel and by the time the map opens up, i won't be able to get them seats next to one another. Is this something that was normal in the PMCO days or on this particular route or hub (EWR)? Is there anything I can do to assign them seats now? Particulars: UA 1462 EWR-DEN Aug 4, 737-700 (PMCO metal), F cabin. I saw inventory dwindling on the other segments of the desired itin so I encouraged my brother to go ahead and buy the tickets, thinking that the seatmap would open up the next day, and it never did. I called Reservations on his behalf and tried to get them to assign seats and was told that since they couldn't see the seatmap, they couldn't assign seats either. That seems odd to me but what do I know?