The WASP (not the literal bloodsucker but a woman on the PTA so unpleasant Cassian thought she may as well have been) gives Finn a once-over and scoffs; fortunately for Finn, Cassian would honestly pay someone to get her away from his table so congratulations, kid. Cassian is in your debt.

So. He gestures at Finn until he's behind the table, and then he makes Finn sit. Hands him a cupcake. "Here. There's coffee, too." Or tea. Cassian just ignores it, is all.