Botkit conversation with multiple stages by chaining asks

botkit_convo_chain.js

// From https://github.com/howdyai/botkit#multi-stage-conversations
controller.hears(['pizzatime'], 'message_recieved', function(bot,message) {
    askFlavor = function(response, convo) {
      convo.ask('What flavor of pizza do you want?', function(response, convo) {
        convo.say('Awesome.');
        askSize(response, convo);
        convo.next();
      });
    }
    askSize = function(response, convo) {
      convo.ask('What size do you want?', function(response, convo) {
        convo.say('Ok.')
        askWhereDeliver(response, convo);
        convo.next();
      });
    }
    askWhereDeliver = function(response, convo) {
      convo.ask('So where do you want it delivered?', function(response, convo) {
        convo.say('Ok! Good bye.');
        convo.next();
      });
    }

    bot.startConversation(message, askFlavor);
});