Botkit conversation with ask and a single callback

botkit_convo_ask.js

// From https://github.com/howdyai/botkit#using-conversationask-with-a-callback
controller.hears(['question me'], 'message_received', function(bot,message) {

  // start a conversation to handle this response.
  bot.startConversation(message,function(err,convo) {

    convo.ask('How are you?',function(response,convo) {

      convo.say('Cool, you said: ' + response.text);
      convo.next();

    });

  })

});