Re: learning dialogue
i think in that example you could get away without describing the conversation, especially if there's nothing worth noting about the exchange. the only time i consciously put in hello conversations is when it's between main characters. if you're just saying hi to the pilot and all he's got to say is you should have good weather, no need to detail that, is there?
not that you do, but some people have lots of trouble writing good dialogue, which, for those people (myself included), that's where writing becomes more of a craft than relying on talent. there's absolutely no reason to lose heart, it just means someone has to learn how to do it as opposed to having that innate skill (assuming it's a framework issue and not the actual content). honestly, though, i doubt there's more than a handful of modern dialogue masters out there: one competent author's dialogue structure is hardly different than another's (again, this isn't about the content of the dialogue), i'd say.
i don't know if this is right or wrong, but the way i reason it is if you wouldn't want to see it acted out in a movie you probably don't want to read it in a book. as a rough outline for me, that's seemed to work. at least no one has ever complained my dialogue was bad. maybe they were being nice, like when a new girlfriend says size doesn't matter.