US STOCKS-Wall St set for flat open after ADP, eyes on Ukraine
* ADP private sector employment short of expectations
* Markit, ISM services data due
* Futures up: Dow 7 pts, S&P 0.5 pts, Nasdaq 3.5 pts
By Chuck Mikolajczak
NEW YORK, March 5 (Reuters) - U.S. stocks were set for a flat open on Wednesday after two days of sharp swings as investors shrugged off a softer than expected reading on the labor market and ahead of two reports on the services sector.
* U.S. private employers added 139,000 jobs in February, shy of economists' expectations calling for a gain of 160,000 jobs, while January's number was revised downward by 48,000 to 127,000 jobs.
* Following the most serious confrontation between Russia and the West over influence in Ukraine and control of Crimea, a global investing flight to safety on Monday reversed sharply on Tuesday. Markets were calmer on Wednesday, but volatility was expected given the fluid situation in Ukraine.
* The S&P 500 closed at a record high Tuesday ahead of the first face-to-face talks between Russia and the United States on averting the risk of war in the Crimean peninsula.
* Other data expected on Wednesday includes measures of services sector growth for February from Markit, at 8:58 a.m. (1358 GMT), and from ISM, at 10:00 a.m. EST (1500 GMT). Continuación...