Originally Posted by christep

For example, I might initially ticket a DONE3 as CAI-xLHR-HKG-SFO-xLHR-CAI with only the first two segments dated because they were the only ones that I knew I actually wanted to fly. Then I would get separate reservations for the segments that I actually wanted to fly after HKG, getting the ticket number entered in the reservation. Generally I would book the segments directly with the airline flying them, so I would then end up with, say, a CX reservation for HKG-NRT-HKG-DPS-HKG-JFK, an AA reservation for JFK-DFW-ANC-DFW-ORD-SJU-LAX, and a BA reservation for LAX-xLHR-IST-LHR-CAI.