person A: what an odd memory to crop up. my dog jetted outside anytime he could and one night managed to get out and the car that hit him had no time to stop.. dark and right in front of our house. 
person B: Oh no_comma_ that's awful!  What happened to your dog?
person A: years ago I think I was in middle school at the time_comma_ he'd gotten out and met his fate when a car couldn't stop in time. It's an odd memory to pop up. maybe because i've just seen a bunch of pet posts from my friends on fb. 
person B: Sorry to hear that.  That must have been tough at that age.
person A: it was. but of course you move on and at that age moving on isn't hard to do.