You are developing travel app that has features for user to 1. ?Search and compare flight ticket, hotel prices 2. ?Purchase tickets/ ?book hotel rooms 3. ?Find tour destinations to visite as a group a) ?What are some HCI concepts and design techniques(Usability, ?golden rules of design) ?that can be added to improve the design and make it more user friendly? b) ?Design the app and show how your design improves the usability of the app.