It's easy. All you have to do is communicate emotionally. Try not to talk to too much, you should be doing 75% of the listening. If you are working too hard to keep a conversation going then you are dealing with a woman with low interest. It's best just to make an excuse and move on....When you are talking keep good eye contact and smile, and for GOD SAKE listen to what she is telling you. Every so often repeat back something she said, and try to build rapport with it.... Relate it as a story from an emotional perspective. Don't say things like "I was so happy to see that." Rather say stuff like "I was a kid on Christmas morning." Don't be descriptive in conversation, be anecdotal. This takes some practice, but once you have mastered this, it becomes second nature.
Keep your stories short... don't ramble. Think about what you are about to say and do not be afraid of being a little vulnerable, it helps you communicate emotionally. I'm not saying be a weak @ss b!tch, but you should be willing to admit that something makes you feel a certain way... then see if you can get her to agree... if you do then BAM! You have an emotional connection. The key here is that YOU CAN NOT LIE... because she will know you are lying.
Women: Blah Blah yacking away ad infinitum ..... And that is how ended up getting a degree in Political Science.
You: Well when I was in school I was getting some pressure from my parents to study business... I don't know about you but for me, the idea of studying business would be like watching paint dry (note: you don't just say 'boring') I was always much more interested in Math... I know it's not for everyone, but solving math problems to me is like solving little mysteries, and you might think this is silly, but when I was a little boy I used to pretend I was a detective with each math problem... I guess that is why I gravitated to engineering. Does this make any sense to you?
You told a story from an emotional perspective that recalls childhood (always a good way to go) relative to what she said, and then at the end tried to see if that had connected in some way with her by asking if she understood what you were telling her. This is how you build an emotional connection with a woman.