HI -- You could just get chandelier style floor lamps and even sconces for the walls instead . Not all dining rooms need to have a ceiling fixture chandelier . Look at the lighting fixtures at --- Restorationhardware.com

Lefty47 makes a good suggestion. If it's too hard to wire something overhead with the use of a swag, you can use other forms of plug-in lighting instead. Just make sure to have layers--i.e. don't rely on just one light source--so you don't have dark spots in your dining area.

Floor lamps, especially with light pointing up to the ceiling (aka "torchiere" lamps), are good for providing overhead lighting. Here are some ideas:
1. http://www.lightsonline.com/product/trend-lighting-bronze-threads-gray-trim-floor-lamp-bf5537
2. http://www.lightsonline.com/product/kenroy-home-hayden-torchiere-lamp-in-tobacco-finish-21417tob
3. http://www.lightsonline.com/product/stylecraft-64-floor-lamp-in-brushed-steel-finish-l72586ds
Our whole selection: http://www.lightsonline.com/floor-lamps/

Table lamps or buffet lamps are great sources of layering too. Our large selection of table lamps is here: http://www.lightsonline.com/table-lamps/

Buffet lamps are tall, slender and especially ideal for dining rooms. Our selection: http://www.lightsonline.com/buffet-lamps/

Hope this has been of help!