system
grateful: I got a flat tire at work and a coworker fixed it for me. I was very thankful.
human
Yesterday I left the office only to find that my car had a flat tire in the parking lot. 
human
Oh no! You must have been pretty frustrated.
human
I was! Thankfully a coworker helped me change the tire. I don't know what I would've done without him!
human
That's great that you had someone to help you.