Right, I'm sure you can force the LAX-IAD 777 in F, which will be a suite. It'll be expensive, however.
[KVS Availability Tool 2.9.1/Platinum - Sabre: Fares/DotRes/US/USD]
Code:
LAX Los Angeles Int'l CA US [KLAX]
IAD Washington Dulles Int'l DC US [KIAD]
MON 10 Sep 2007 / OW
Carrier From To Fare Cur Fare Basis
--------- ------ ---- --------- ---- --------- ---- ---- ----------
UA LAX IAD 632 USD QUA7UPN
UA LAX IAD 829 USD HUAUP
UA LAX IAD 1034 USD MUAUP
UA LAX IAD 1538 USD FUA2FS
UA LAX IAD 2490 USD FUA
UA LAX IAD 2510 USD F