Originally Posted by
HalconBCN
I am glad you are not working in my HR department!

First thing to do would be speak with the employee and hear their side of the story. There are always two sides. None of us were there in the room, so we can only rely on two competing accounts or perceptions of what happened.
Since the LP service is by all accounts generally agreed to be impeccable, this particular employee might need some retraining, but like I said, we cannot be judge, jury and executioner when we are not in full command of the facts.
Assuming that OP is not lying about being picked up in the car from incoming flight, I struggle to see what on employees side of the story might change the fact that making a scene in the middle of the lounge was height of unproffessionality.