First and foremost, have an attractive booth space that will get the customers' attention and draw them in. Once they are in your space, engage in conversation. I usually begin with a big smile and a "Good morning" or "Hello." Then I ask if they are familiar with soy wax candles (the product I sell). Ask them what their favorite fragrance is. If you have it, show them what sizes you have. If you don't, steer them towards something similar that you think they may like. I think being friendly, but not overly pushy, helps with the sales. Nothing worse than walking into a booth and being greeted by a dead fish!!!