system
sad: I got news that my grandfather passed away. Nobody saw it coming.
gpt
Ugh. I got some awful news the other day.
gpt
That's too bad. What happened? Is everyone OK?
gpt
I got news that my grandfather passed away. He was old but no one saw it coming. 
gpt
Oh I'm so sorry to hear that. I hoep your family is strong enough to support you through this.