'Send new dialog message.'

def act(self):

    if self.epochDone:
        return {'episode_done': True}
    (action, self.epochDone) = self.next_example()
    self.episode_done = action['episode_done']
    action['id'] = self.getID()
    self.lastY = action.get('labels', None)
    if (not self.datatype.startswith('train')):
        action.pop('labels', None)
    return action
