This app is a flight booker seeded with 30 days worth of flights on 5 airlines to and from 10 cities.  There are a total of 13,500 available flights randomly allocated.  The database is updated any time the app starts to take any flights that are in the past and add 30 days to their departure date so that there is a continuous pool of 30 days worth of flights whenever the app is used.  The live app can be found here and the github repo is here.