Using the $modal wrapper

use-modal-wrapper.js

// This modal will automatically close after the short timeout (i.e. 15 secs)
var modal = ModalService.open({
    templateUrl: 'views/core/purchase/notifications/processing-timeout.html',
    size: 'medium',
    timeout: 15000
});
modal.instance.result.then(function() {
    // No additional actions for dismiss
}, function() {
    $scope.resetApp();
});