It is okay to want to separate business and family.
Dave's son Max is interested in a summer job and asks Dave if he can find him something at his work.
Dave wants to respond to Max's request.
Dave tells Max that he's not comfortable pulling strings for family, and he needs to apply elsewhere.
Dave tells Max that he'll talk to his boss and make sure Max gets a position.
Max finds a different job eventually and there are no conflicts of interest created for Dave.
Max performs badly and Dave is put under huge pressure at work for having recommended him.