system
lonely: My dog just passed away and he was the only friend I had.
human
My dog just passed away and he was the only friend I had.
gpt
I am so so sorry to hear that. 
human
Yeah, it has been hard these last few days.  He had cancer, but he went pretty fast at the end.
gpt
I know this is so hard for you but he is in no more pain and I am sure he is watching over you