CUMMING — A group of boys sat around a table Tuesday at Tam’s Backstage, enjoying a warm, home-cooked dinner as they talked with the neighboring girls; table. It’s a rare social event for these teenagers, and they soaked it up as much as their gravy with bread. The two groups were part of more than 100 people who were served at the annual Helpings of Hope Dinner, a free event that provides a holiday meal to at-need children and families.