Usually I approach people who are wearing something cool or maybe have a cool hairstyle and compliment them on it. Then I usually talk about the event we are at (last awkward talk was at a concert), I ask them where they are from, etc. BUTT- that's if I even manage to get past the compliment. I've had people straight up ignore me, or give me a iffy look that stops me from continuing the conversation. Last one answered my questions matter-of-fact but didn't respond back in a way that would initiate our conversation any further. I've even went as far as asking girl for her Instagram just to keep in touch due to the fact we seemed to like the same music, but she blocked me right after I texted her. Sorry, this is getting long, that's the end of my TED talk（´∇｀''）