Send Message to Skype group within an interval

((() => {
  // First I store the reference from the first inbox
  server.post('/api/messages', (req, res) => {
    adapter.processActivity(req, res, async (context) => {
      const reference = TurnContext.getConversationReference(context.activity);


      // Call the function that sends message within an interval
      sendMessageNow(reference);
    })
  })

  // Secondly I use the reference to continue the conversation
  function sendMessageNow() {
    setInterval(async () => {
      await adapter.continueConversation(JSON.parse(reference), async (context) => {
        await context.sendActivity("Sending a new message");
      });
    }, 5000);
  }
})())