Shop this look on Lookastic: http://lookastic.com/men/looks/black-sunglasses-black-print-crew-neck-sweater-navy-jeans/8512 — Black Sunglasses — Black Print Crew-neck Sweater — Navy Jeans
Shoes: There are several options of shoes that could work for a conference. Just find a pair comfortable for all day wear - remember, conference halls involve a lot of walking.