Thanks guys,
I followed your advices and it helped a bit. I just have to practice it now. I had a bit of time tonight, so I went to salsa. I'm pretty comfortable there, because I'm pretty good. I didn't know that girls in USA give their Facebook instead of phone numbers. The evening was successful from that point if view. And the line "I have to go, how can we continue in this chat" works
But I wanted to ask this. I've got some good (and real) DHV stories. I was a ballroom dancer and I danced on a World Championships, I skipped 2nd grade at elementary school because I was super smart, I travelled pretty lot (in Europe). But the problem is, that sometimes I don't present that stories very good and it's followed by silence sometimes. Even if I wait a bit to let them say something. Fortunately, it wasn't the case tonight. I started talking to one guy whilst waiting for the bachata class to end to get a bit more comfortable and it worked. I then danced with one beginner girl, she enjoyed the dancing so everything was much easier. And she also came back to me after we danced with other people.
My slight disadvantage at loud places is, that english is only my second language, so I don't understand sometimes (especially when girls have an accent I'm not used to). But I try to make that an advantage to get closer, kino etc. As I said, it worked today. But it was only a half success, because dancing was my opener and part of conversation which made her comfortable around me. I should also go to the streets and malls to see how long will it take to be successful there. But it's a good start, what do you think?