title: How to use Dialog Directives with Alexa's java SDK
body: <p>I'm trying to create my own Alexa's skill with the java skill kit, and I would like to use the Dialog Interface. I have created my Dialog model with the skill builder in beta, but now I don't understand what I need to return via my webservice in order to delegate my dialog.</p>
  
  <p>Which class should I use to send Alexa a command to handle the next turn in the dialog ? 
  Moreover, I don't have the dialogState property in the IntentRequest class...</p>