Red-eared slider turtle lost near Lincoln Park Lakefront Trail

I lost my red-eared slider turtle named Saffron yesterday around 3pm along the Lakefront Trail near North Avenue Beach in Chicago. He's about 4 inches across, bright green with yellow striping and distinct red patches behind each eye. The shell has a tiny dent on the front left scute, and there's a small white crescent-shaped mark on the underside of his shell that makes him easy to spot. This turtle is really special to my family—my son saved up for months to buy him, and he's been part of weekend walks ever since. If anyone spots him, please help bring him home; we'd be incredibly grateful.