It's a funny thing: Whenever one of these dialogues is purely fictional, people seem to find it true to life. But whenever I base a dialogue on a conversation I've actually had, I get letters from people complaining "Nobody talks like that." See if you can figure out which dialogues are which.
By the way, I'm showing the original titles of the dialogues, but if you click on a link to jump to an external site, you may find the title changed. I like my own titles better.