Ours usually stray away from answering specific questions about coursework or assignments, but they're happy to help if you re-word it and ask more general topics.
If you have a problem understanding the assignment, then sure. But don't expect them to give you all the answers... That's why you're the student!
Usually they can give you pointers on how to answer the question such as steering you in the right direction with your reading and how to structure your essay/report, but they can't read through what you've already done and tell you what else to put in there or give you the answers, at least in my experience.
they cant read your essay and specifically discuss all about that with you ,but they can give you a bit of information on area you are not clear about or discuss your idea with you.