Multi Step Flights on Southwest ?

[wee-haggis]

In the Southwest online booking website,is it possible to do multi flight booking at the same time? (ie:fly from Buffalo to Oakland,,,,then a few days later Oakland to Orange County.....then a few days later Orange to San Diego....then a few days later San Diego back to Buffalo).
Or
Does it all have to be done in separate bookings?

 

[lawgs]

methinks they will all have to be ONE way separate bookings