code: function(conversationId, name, text, callback) {
        send(null, conversationId, utils.messageText('name', name, text), callback);
      }
docs: Send a plain text message from `name`
  
  @param  {String}   conversationId Conversation ID
  @param  {String}   name           Sender name
  @param  {String}   text           Message text
  @param  {Function} callback       Callback function