The next thing you should do is to find out if she have anything that you need. The major reason why people organize business expo is to bring business men in a particular region or industry together so that they can network among themselves. When you meet new people at business expo, you should ask them the kind of business that they do in order to find out if they can be beneficial to your own business. At the same time, you should let people know the kind of business you do too.