just tried to book LGA-LAX round trip using business extra (BX1A) award for Jan 22 / Jan 26. There are 4 pages of mile saver awards available for this date. Agent told me no availability direct or through ORD / DFW. She suggested to use mile saver awards which show availability on almost every flight on Jan 22 and Jan 26 but not a single BX1A award seat.