Update
The manager was here again for dinner service. I greeted him by his name which i memorized. That made him shake my hand again and ask for mine.
This time he had me follow him to a table. The conversation on the way allowed for me to gently touch him on his upper arm. He stayed and chatted a bit at my table before attending to other patrons.
He was kinda flirty too (or I am misreading US friendliness).
I think my flirtyness index gained points again today