The Federal Reserve on Wednesday reaffirmed it was in no rush to raise interest rates, even as it upgraded its assessment of the U.S. economy and expressed some comfort that inflation was moving up toward its target. After a two-day meeting, Fed policymakers took note of both faster economic growth and a decline in the unemployment rate, but expressed concern about remaining slack in the labor market. “Labor market conditions improved, with the unemployment rate declining further,” the Fed said in a statement.