Oil climbs on hopes for output cut, dollar slips

By Richard Leong NEW YORK (Reuters) - Crude oil prices rose on Thursday to their highest in three weeks on hopes for a pact among oil producers to cut output, while the dollar slipped on bets that interest rate hikes by the Federal Reserve would be more gradual than it has suggested. The rebound in the oil market lifted share prices on Wall Street and other stock markets in another rollercoaster session. The persistent volatility in U.S. and European equity markets underpinned demand for U.S. an