Wordpress - CSS not pulling in for jQuery UI dialog

There is no jquery-ui-dialog style defined in WordPress Out of the box, you need to ue the stylesheets manually, when i needed to enqueue the jQuery-UI style i pulled it from google api CDN

wp_enqueue_style('jquery-style', 'http://ajax.googleapis.com/ajax/libs/jqueryui/1.8.2/themes/smoothness/jquery-ui.css'); 

but you can enqueue a local copy if you want like this:

wp_enqueue_style( 'myStylesheet', WP_PLUGIN_URL . '/path/stylesheet.css' );