Part 2 is &quot;Designing the Conversational UI&quot; <a href="http:&#x2F;&#x2F;alistapart.com&#x2F;article&#x2F;designing-the-conversational-ui" rel="nofollow">http:&#x2F;&#x2F;alistapart.com&#x2F;article&#x2F;designing-the-conversational-u...</a>