The cafeteria in the Food Supply Department didn't actually sell food. Instead, there were a few tables there, and on top of those tables were lunch boxes that all employees in the building could take. All the food there was free, and Luca awkwardly took his lunch box before turning his gaze to survey his surroundings.
It was past lunchtime, so there were a lot of empty tables and chairs in the cafeteria. Luca had intentionally chosen to eat lunch later than most of the employees because Finn told him that he would be returning to the department building after lunch. It wasn't that Luca wanted to eat with the blonde, but he just didn't know anyone in the building, and he thought it would be better if he waited for the blonde.
"Over here, Wolfie!"