NWScript:

// NPC talks to PC's automatically only ONCE.
// Original Script by: Cyber_Bruno
// Modified by: Sephiroth Jenova(sephiroth_j@hotmail.com)
void main()
{
string sTag = "Pathal";
object oNPC = GetObjectByTag("Pathal");
object oPC = GetLastPerceived();
if(GetIsPC(oPC) &&
GetLocalInt( oPC, "SR_Init" + GetTag(oNPC)) == FALSE &&
IsInConversation(oNPC) == FALSE &&
GetLocalInt( oPC, "PathalDoOnce") == 0)
{
AssignCommand(oPC, ClearAllActions());
AssignCommand(oNPC, ClearAllActions());
AssignCommand(oNPC, ActionMoveToObject(oPC));
AssignCommand(oNPC, ActionStartConversation(oPC));
SetLocalInt(oPC, "PathalDoOnce", 1);
}
}