This is an insanely polished piece. It's pretty creepy, great job all around. I also couldn't figure out who to give the package to. The fact that you were able to get so much dialogue and stuff with additional stuff on revisit is awesome. The aesthetics and vibe are immaculate. It's nice and creepy.
Some notes: I couldn't tell what I was looking at right away in the elevator because of the lighting. The character controller moved a little wonky because I tried to walk through the elevator door while it was opening. The controls felt a little weird because navigating the conversation menu is done with arrow keys and enter but walking around and looking at things is wasd and mouse. Also space to jump and also select a message felt weird. I think maybe adding scroll wheel as a way to select different text and left and right click to interact with things instead of e might help. Basically I feel like I shouldn't have to take my hand off of the mouse to navigate conversation or interact with stuff.