lawrence cyoa ready for review

it's awesome. would love to show you and discuss
ok, I think I know what you mean here.... after creating, we should just show the trip, right? My thinking here is that after we initially create a trip, every single time we need to pick the flights for it, so we're going to that intermediate step before we actually view the trip. Does that make sense? or should I have logic in #show that checks if we need to pick flights, and show the pick flight UI?