person A: I am very lucky to have healthy_comma_ happy children. There is so much sickness and sadness in the world today.
person B: Health is truly a blessing! How old are your children? 
person A: I have 4. They are 21_comma_ 19_comma_ 17_comma_ and 14. It makes me so sad to watch tv or be on the internet and see all the children living in poverty or with diseases like cancer. 
person B: I agree. I can't imagine what it must be like to be a parent and go through that. 