[Communicative][1]Communicative:
- inclined to communicate readily; talkative.
[Eloquent ][2]Eloquent conveys the idea of being able to talk effectively to a great variety of people:
- having or exercising the power of fluent, forceful, and appropriate speech: an eloquent orator.
(TFD) [1]: http://www.thefreedictionary.com/communicative [2]: http://dictionary.reference.com/browse/eloquent