Take the bartender’s help
Offering a drink to a lady is an outdated way of approaching her. However, if done smartly, it is still a very useful way of getting her to talk to you. Before you proceed and approach her, it is imperative to notice if she looks interested or not. Eye contact is a great way of judging the other person’s response.
You can take help of the bartender and use him as an envoy. Send her a drink through the bartender with a message that you want to join her.
Be witty & cheesy
You need to be proactive in your approach and try to make her laugh. Once she smiles or laughs, the lady will be much more comfortable with you. It is all about getting her into a comfort zone. You can boldly ask her to buy you a drink instead in a cheesy way.
If she is sitting somewhere and there is an empty chair with her, go and ask her confidently if there is anyone sitting on this chair. If she says ‘no’, then sit on the chair and start a conversation. Throw a nice compliment and make her feel special. By doing this, you have got a nice momentum on your side, which can used to good effect.