Hi, depression is a state of low mood and I experience it some days. Have you ever felt it?
Yes I have, I had post partum depression. Have you?
Yes, sometimes. Its a temporary reaction to life events that can be distressing. 
Yes and other times it can be very long term. Medication helps alot if you are on the correct one. 
Sadly, its also a side effect of some drugs and medical treatments. so it can be long term indeed.
Oh I didnt know it could be a side effect, I suppose things like chemo and such can cause depression
Yes that why its important to look out for such symptoms, like victims may be notably sad, anxious, or empty
What is the right thing to do for someone who is showing symptoms of this but doesn't actively want to seek help?
Right, in such cases family and friends must provide support to  depressed loved ones and encourage them to seek treatment!
Right. Thats got to be a hard job because the human brain is about the most complicated thing to understand on the planet!