For those that may not know, ‘Craic’ or ‘crack’, is an word commonly used in Ireland in English and in Irish. The question contained in the desktop above is a typical greeting which can mean ‘What’s happening with you?’ or ‘What’s up?’. It’s a friendly way to greet each other. In other contexts, craic can mean good fun, banter and such like e.g. The concert last night was great craic.
You can reply to the question like this:
R) Níl craic ar bith agam, tá mé go maith, agus tú féin?
No craic at all, I’m grand, and yourself?