Someone

case 19938:
		{
            if(((Creature*)unitTarget)->GetEntry() == 10556)
            {
			    WorldPacket data(12);
			    data.SetOpcode(SMSG_PLAY_OBJECT_SOUND);
			    data << uint32(6197) << unitTarget->GetGUID();
			    p_caster->SendMessageToSet(&data, true);

			    sQuestMgr.OnPlayerKill(p_caster, ((Creature*)unitTarget));  // this should increment in quest log

			    // Send chat message
			    char msg[100];
			    snprintf(msg, 100, "Ow! Ok, I'll get back to work, %s", p_caster->GetName());
			    unitTarget->SendChatMessage(CHAT_MSG_MONSTER_SAY, LANG_UNIVERSAL, msg);
            }
            else
            {
                SendCastResult(SPELL_FAILED_BAD_TARGETS);
                return;
            }
		}break;