In a large bowl, beat cream cheese and sour cream until smooth. Stir in taco sauce and cumin; set aside.

Spread the refried beans over the bottom on a serving platter or 13x9-in. dish. Spread cream cheese mixture over the beans, leaving about 1 in. uncovered around the edges. Top layer with lettuce, cheese, tomato, olives and chilies. Serve with tortilla chips.