The first thing to do before going to talk to the girl you want to seduce is to make sure that the environment is right. Creating an ideal ambiance with sweet music, light shades… or being in a pub where you can talk without big music sounding is a big step to approach them.
Although some people try to go to bars to seduce girls, or women, few people actually do it. Most people go to a bar or nightclub with friends or girlfriends or boyfriends. There are very few that go only to seduce. So it would be question of finding a different place. You'll see that there are many other places where you can seduce a woman.
Walking in a park for example or queuing for a ticket at the cinema… you must find the place and the perfect pretext to approach and starting a conversation. Some women do not like to do this and you have to make an excuse to start the conversation. You know, other words than some very silly as asking the time. You must look for genuine reasons why a woman would like to have a conversation with you.
Really, if the first words that you say to her are what she want to hear, the girl will be much more kind to you and do not treat you like a stranger who asks for information.