Edit in JSFiddle

// Modules for controller
angular.module('myApp.controller', [])
  .controller('GreetController', function(ResponseService) {
    this.greetings = ResponseService.greetings
  });

// Module for services
angular.module('myApp.service', [])
  .service('ResponseService', function() {
    this.greetings = "Nice to meet you controller, I am service";
  });

// Application level module to attach services, directives,controllers or filters modules
angular.module('myApp', ['myApp.service', 'myApp.controller'])


// bootstraping the app
angular.element(document).ready(function() {
  angular.bootstrap(document, ['myApp']);
})
<div class="container jumbotron">
  <div ng-controller="GreetController as $ctrl">
    <p ng-bind="$ctrl.greetings"></p>
  </div>
</div>