Lost blue dog collar with personalized tag named 'Benny' near the Las Vegas Strip park.

I lost my dog's blue collar with a personalized tag that has his name, 'Benny', and my phone number on it. It went missing during our walk in the park near the Las Vegas Strip. I think it might have slipped off when he was playing with another dog. I'm really hoping to get it back, as it's very important to me.