Nice. Liked the writing. Wasn't too tough to figure out who to let in. Probably needs more variables to check for as time goes on, but this is a good start!
It's funny that you can drop the ID from up high and it'll still go in.
Music is nice, and the sound effects fit well enough.
For the computer, you could probably add an X on the top right and also something to close it when clicking the grey area outside the computer. I usually throw a full screen TextureButton without a texture behind the menu to do that.
Text was a little small since I couldn't fullscreen or resize the game.
I liked the character designs and how well their personalities come across through how they speak. Wasn't too overexaggerated, which was nice.
For controls, it'd be nice to be able to keep asking questions without having to click on them after each response.
Overall very good start. I enjoyed it.