As a frequent ventor here I can give you a few advices.
- Please introduce yourself. Your real name is not necessery, you can even you a nickname but starting with a friendly introduction is important.
- Please don't start with something like, "How may I help you?". Even trained professional therapists don't do that. You are not a costumer sales person. A nice friendly "How are you?" is much better.
- Don't condescend the problem your ventor is trying to tell you. The majority of the problem can change from one person to another. You might face to all kind of subjects, accept that.
- If you think you are not the suitable person for your ventor or ventor's problem, please tell him your reason before you disconnect, so you won't break any hearts.
Beyond all these, thank you for being a friendly person and caring enough for the humanity. :)