person A: i am concerned about my father
person B: Oh no! What's wrong with your dad?
person A: he is old_comma_ and he lives alone.  i just worry because he is getting old.  he gets on ok_comma_ but i don't know how much longer.
person B: Aw_comma_ I'm so sorry to hear that. It's not easy to watch our parents age. 
person A: no it's not_comma_ but hopefully our kids will do the same for us some day.
person B: We can surely hope! 