In fact, it's just the things people "ask" you to complete, you can find it on the left side of the screen where all the things you have to do are. As for instance build a control tower level 3, send a plane to Mexico... If you updated you should have someone asking you to build an opera (the former history museum), the symbol is glasses. Then it will ask you to visit restaurants, residential buildings and so on. At the end you have the family ticket (don't really know what the name will be for you).
If I wasn't clear enough just let me know :)
Ok, guess I'm a little slow... So, our Jumbo Planes transformed into attack planes. I was looking though the collections chest and there is a collection (new) where you get attack planes as a "reward" and another collection that you probably need attack planes for to get the stuff. So, that quest will be for some future quest after some future update?! Geez.. Oh, so mixed up.
I started a launch and already have about 600! Please join for a quick launch. Porter029