Looking at ATL-LAS flights in late March/early April. Anyone know why the first-class section of DL104 would be labeled business class on the DL web site? The pop-up on the flight number shows it be a 764, the seat map says it's a 762. But there are 7 rows in the front of the plane, and I thought the 762s were all retired anyway, so I'm assuming it's a 764. I called Delta and asked but the agent was clueless.