Google announced recently that they are starting to roll out dynamic remarketing to all verticals (including flights, hotels, real estate, jobs, classifieds, finance, education and auto).
Basically, dynamic remarketing shows site visitors tailored ads that feature the products they viewed previously on the website, and related products they might be interested in. These tailored ads highlight what matters most to customers, engaging them with subjects close to their hearts and encouraging them to further explore related subjects.
Advertisers report a 15% increase of conversion volume when adding mobile targeting to their remarketing campaigns, and this is why Google makes all of their dynamic remarketing templates mobile-optimized, in order to deliver ads seamlessly across screens.
In any case, Google provides further information at their AdWords Help Center and the Analytics Help Center.