I found the experience to be a bit underwhelming. There aren't as many dialogue trees as there could have been, and the AI seemed to have a hard time grasping sarcasm--not entirely surprising, in hindsight, but it would have made my demise more comfortable.
The concept is solid. Any game with direct AI communication is worthy of at least one star in my opinion, and the scenario is genuinely tear-jerking. My only real biff with it is towards the very end. It took me a while to tell it that I wanted to die with it -- by the way, for those people trying to get the second ending, just say "I don't want to stay with you" -- because my sarcasm kept getting in the way.
I know it seems like a good idea to make absolutely sure your player wants to die on the ship, but this isn't some penultimate decision of a long and epic quest. It's two minutes, give or take, that can be easily repeated should he/she screw up and get the wrong ending again.
Overall; I liked it. It wasn't bad, but I've seen better AI conversation games. (To be fair, none of them were flash games.)