system
guilty: I sold my truck and forgot to give him some advice on how it works. I feel like he is going to run into troubles.
human
I feel bad after selling my truck.
gpt
Why do you feel bad about it?
human
I forgot to tell him important things about it. He will most likely run into troubles.
gpt
That's unfortunate. Do you have anyway of contacting the buyer now?
human
No sadly.