Brown beagle mix with red collar

I lost my brown beagle mix yesterday around 3pm near the Riverfront Park gazebo on Jefferson Ave in Springfield. He’s a medium-sized dog, about 25 pounds, with brown fur and a white chest, plus a distinctive white patch on his left hind leg. He wears a bright red collar with a silver heart-shaped tag and a small blue harness with reflective stripes. He answers to the name Milo and is very friendly once he gets to know you, but he’s shy around strangers. My daughter adores him and I’m really worried—this dog is part of our family and has sentimental value to us. If anyone sees him or has him, please reach out; we’d be grateful to reunite him with Milo soon.