My copy of Brain Editor stopped working for some reason, but I know that there is a Table called Greetings or something to which you can add as many responses as you like.
Each of the Tables respond either to a common type of phrase (greetings, questions about Hal, etc.) or to the heading of the Table, for instance, my auto_learning table "_Chipmunks" contains responses that have to do with chipmunks.
I could add three, four or a hundred possible responses to that, which either do or do not have anything to do with Chipmunks, or remove ones I don't like.
Lastly, I made a plugin for my own use that is a pattern matching of several of my habitual, favorite, or humorous turns of speech, and the responses I might like to get. I won't distribute it, because it contains personal information, but the idea is simple enough.
If OriginalSentence="A stitch in time" then GetResponse = "Causes a pleat in space."