I'm looking for some AIML files suitable for smalltalk chatterbot responses from a waitress NPC. The idea is that my own program asks questions like "What do you want to order" and scans the result for keywords. If the response is off-script, I want to send that to a chatterbot to get something vaguely reasonable as a reply. Then I'll ask the "what do you want to order" question with slightly different language. Repeat until the player gets it.
So basically I need some big AIML file of irrelevant comebacks, suitable for a waitress role. There's lots of free AIML around, such as https://github.com/pandorabots/Free-AIML but none of it seems quite relevant.
Suggestions?