This game fucks for being made in scratch, you should really learn a more powerful engine like unity because I think you could go brazy with the right tools.
Feedback:
It took me a minute to realize you have to include the > in your response, you should allow the player to type without the > If not you should at least include a little text warning that tells the player that or at least notifies the player in some way that their response was invalid instead of just having nothing happen.
Pretty much anything else id have to say is merely limitations of the engine.