It happened Tuesday afternoon in the 5200-block of West Van Buren Street in the city's Austin neighborhood.
A 10-year-old girl says two men in a van asked her if she wanted to come inside the van and eat ice cream. She managed to get away.
Police are looking for a green and white van with no side windows. The van also has "tacos" written on the side of it.
Anyone with information is asked to contact Chicago police.
