input: [Types] Tracking cookies to improve your interaction with our Website [Some Examples] Dpc, mid, Bk, NGUserID [Purpose] 
output: Used to make your interaction with our Website more enjoyable by presenting targeted information from your previous use of our Website. For example, the dpc cookie tells us your previous search criteria so that you can choose to re-search using the same criteria. The mid cookie tells us your Member ID. The Bk cookie tells us if you have made a Purchase on our Website. The NGUserId is set by our advertising server, www.revresda.com, and allows us to gauge the effectiveness of our advertising and make the advertising more relevant to you (e.g. if you search for a hotel in London, you may see an advertisement for an activity in London).