Who are you waiting for? Who is waiting for you?

I’m waiting for my wife who had a stewardess on her plane get sick before it was off the ground. That meant they were undercrewed and had to go back to the terminal. She got partway here, but it seems that she is going to have to spend the night in a hotel somewhere, and then look for a flight home tomorrow.

My son is waiting for me because he wants to see a movie with me.