DANANG, Vietnam (Reuters) - Russian President Vladimir Putin said on Saturday he had a normal dialogue with U.S. leader Donald Trump at a summit in Vietnam, and described Trump as civil, well-educated, and comfortable to deal with. Putin said that a mooted bilateral sit-down meeting with Trump did not happen at the Asia-Pacific Economic Cooperation summit, citing scheduling issues on both sides and unspecified protocol issues. Putin, at a briefing for reporters at the end of the summit, said there was still a need for further U.S.-Russia contacts, both at the level of heads of state and their officials, to discuss issues including security and economic development.   