Grey cockatiel with yellow crest and orange cheeks

I’m missing my grey cockatiel, Sunny. Yesterday around 3pm, he slipped from his travel cage while I was loading up near the Benson Park entrance around 60th Street and Maple in Omaha. He’s a small bird, about 12 inches from beak to tail, with a bright yellow crest and orange cheek patches. He wears a slender red leg band with the numbers A12 and there’s a tiny white patch on his left wing that’s easy to spot in flight. He’s usually very friendly and loves chatty songs, and he’s been part of our family for almost two years. I’m really hoping someone heard a soft chirp and can help bring him home.