Ask HN: Are there any examples of relatively “intelligent” bots?

With all the hype around bots lately , I've been looking for any bot that could handle varied inputs, if not for any given topic , atleast in a very restricted domain. So far I haven't even found a single bot that is remotely flexible in the way it handles inputs or is able to maintain context in all but the simplest of cases. I'd be interested if someone on HN can point to good examples.