Mine the common questions
Find what customers actually ask.
Act as a customer support lead for [Your product / store]. My customers are [Your typical customer]. List the 20 most likely support questions they ask, grouped by theme (shipping, product, billing, returns, account). Mark which are simple/repetitive (safe to automate) vs sensitive (needs a human).
Pro tip: If you can, paste real ticket subjects — the automation is only as good as the questions it covers.