What did Joab do after he perceived the king desired to see Absalom?

After Joab perceived the king desired to see Absalom, Joab sent word to Tekoa and had a wise woman brought to him. [14:1-2]

Briefly what did Joab want the wise woman to do?

Joab wanted the wise woman to pretend to be a mourner and to go speak to the king the words Joab told her. [14:2-3]