Actually, I wouldn't do a question/answer bit.
I'd simply cretae text files for various categories, containing stock phrases. Have the "bot" randomly select a line from each file and put together the reading. You might have it ask a few questions initially, to add a bit pof personalization in the mix: name, age (might indicate certain categories to choose from, such as health/kids for older people or love/money for younger), sex, marital status.
Your categories would be things like love, relationships (for the married/engaged ones), friendships, social, employment, money, health, acts of god, etc. You'd want just one from each category, so your random selections wouldn't contradict each other. Some samples:
Love:
"You will meet someone soon, who will sem to be your heart's desire. They won't be all you think they are, but they'll be everything you need."
"I see you with a happy family" (could work for relationship as well)
Relationship:
"I see you growing old together, but not without some growing pains along the way."
Friendships:
"There is someone close to you, not a relative. Someone you talk to, and can tell many secrets. You will be close for a long time."
"Someone you count as a friend will let you down."
Social:
"You will gain the respect of some in your neighborhood/church/whatever."
Employment:
"I see big changes with your career over the next few years."
Money:
"You will come into to a large sum of money within the next year."
"I see financial trouble in your future, although the date is uncertain."
Health:
"I see some sort of health trouble, I seem to get a feeling in the chest area. See your doctor regularly, you have a good chance to avoid this before it becomes serious."
Acts of God:
"There will be a natural disaster in your area. Many will be killed, but you will survive."
A lot of these statements, generalized much like astrology, should do the trick. But I'd play it as a psychic machine, and have a link for "If you thought this reading was accurate, click here for an appointment for a more detailed reading!" You could play it up as the computer can get moe information if you come into the office so it can read your aura directly, possibly even have a fake webpage set up to "explain" the "science". I'd put the "hoax" announcement under a link to "Make an Appointment", and even add in a description of how you did it, and maybe a short explanation of why your "scientific" explanation on the fake page was wrong.
I could see this being a teaching tool for skepticism, with a brief explanation of confirmation bias and post hoc reasoning.
to get as much personal info as she can, then blend it into her reading. (tuff code; huge woo!)
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