Originally Posted by
JeffBHD
Fourth time lucky - tried a different approach and asked them first to book LHR-IAD-MCO (no problems) and then add DUB-LHR to the front end (again no problems).
This has happened to me recently too with LHR-SFO-RNO on UA. It was only bookable by the agent (and it was one of the really good ones so I am thinking no BS involved) if you asked for the whole itinerary rather than sector by sector.
You just need to beware that this can sometime happen with UA flights.