July 18 (Reuters) - A cockpit recording of dialogue between the two pilots of the Air India flight that crashed last month supports the view that the captain cut the flow of fuel to the plane's engines, said a source briefed on U.S. officials' early assessment of evidence.

Air India will suspend services between New Delhi and Washington, D.C. from September due to aircraft shortages caused by upgrades to its Boeing planes and as Pakistan's airspace ban for Indian carriers affects its international routes.