text: var twilio = require('twilio');
  var accountSid = 'AC02b441dd8dd58dead55cc654a2ad1fcb';
  var authToken = 'f3f51e2e5761ef1f4bd6eaea7aa9907f';
  
  var client = new twilio(accountSid, authToken);
  var to_num = '+16164372084';
  var from_num = '+16165524690';
  var message_body = 'Your appointment';
  
  client.messages
    .create({
      to: to_num,
      from: from_num,
      body: message_body
    }).then(message => console.log(message.sid, 'success'));
  