Wall Street ends flat after choppy session

Wall Street was mixed on Monday as weaker-than-expected U.S. economic data reduced concerns about potential interest rate hikes and a dip in oil prices pushed down energy shares. U.S. consumer spending barely rose in February and inflation retreated, suggesting the Federal Reserve could remain cautious about raising interest rates this year even as the labour market rapidly tightens. The S&P has mostly recovered from a 10-percent loss at the start of 2016 but many investors remain wary of po