Shares of Dillard's Inc. fell more than 5% in the extended session Wednesday after the department store reported first-quarter sales that narrowly missed Wall Street views and flat same-store sales. Dillard's said it earned $78.6 million, or $2.99 a share, in the quarter, compared with $80.5 million, or $2.89 a share, in the year-ago period. Sales rose 1% to $1.47 billion, compared with $1.46 billion a year ago. Analysts polled by FactSet had expected the company to report a profit of $2.84 a share on sales of $1.49 billion. Comparable-store sales were flat year-on-year, Dillard's said. The analysts surveyed by FactSet had expected comparable-store sales growth of 0.7%. Dillard's shares ended the regular trading day down 1%.