DALLAS — Gensler has been selected to provide interior design services for the new administrative offices of the Dallas Opera. The offices will be located within the Margot & Bill Winspear Opera House at the Dallas Center for the Performing Arts in Dallas. The opera house is currently under construction. The space will consist of 13,000 square feet overlooking the 10-acre Performance Park. The opera house is scheduled to open in October. Foster + Partners is serving as project architect for the new opera house.