There are misprints and grammatical errors. It's not good for text-based game
IMHO:
I think you have to give clues to player - what is the right answer. Right now it's often random. And player just have to remember the list of right answers
And, also, it's not good idea to fail the game for one wrong answer. You can just do one more dialog with second chance to pass, or even do little fork in passing