Botkit conversation ask with array of multiple callbacks

botkit_convo_ask_array.js

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

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

    convo.ask('Shall we proceed Say YES, NO or DONE to quit.',[
      {
        pattern: 'done',
        callback: function(response,convo) {
          convo.say('OK you are done!');
          convo.next();
        }
      },
      {
        pattern: bot.utterances.yes,
        callback: function(response,convo) {
          convo.say('Great! I will continue...');
          // do something else...
          convo.next();

        }
      },
      {
        pattern: bot.utterances.no,
        callback: function(response,convo) {
          convo.say('Perhaps later.');
          // do something else...
          convo.next();
        }
      },
      {
        default: true,
        callback: function(response,convo) {
          // just repeat the question
          convo.repeat();
          convo.next();
        }
      }
    ]);

  })

});