const int NPC_A= -200; // sample npc number
const int NPC_B= -201; // sample npc number
const int MET = 28; // met flag number

// npc A's function

	if (UI_get_item_flag(NPC_B, MET))
		add("NPC B");

	converse (0)
	{
		case "NPC B" (remove):
			// Met dialog, etc
		case	// other dialog cases and rest of function
	}

// npc B's function

	if (UI_get_item_flag(NPC_A, MET))
		add("NPC A");
	converse (0)
	{
		case "NPC A" (remove):
			// Met dialog, etc
		case	// other dialog cases and rest of function
	}	

const int MET_NPC_A = 2000 // example number
const int  MET_NPC_B = 2001

NPC A example:
	if (event == DOUBLECLICK)
	{
		if (!UI_get_item_flag(NPC_A, MET)) // un comment the next two comments and delete this if you still have trouble with met flag
//		if (!gflags(MET_NPC_A))
		{
//			gflags(MET_NPC_A) = true;
			// first meeting greetings
		}
	// already met greetings
		else if (UI_game_hour() >= 12 && UI_game_hour() < 18) // adjust to 24 hour time you feel is appropriate
		{
			// good afternoon
		}
		else if (UI_game_hour() >= 18 || UI_game_hour() < 6)
		{
			// night greeting
		}
		else
		{
			// morning greeting
		}
//		if (gflags(MET_NPC_B)	// using gflags example for if still having met flag issues
//			add("NPC B");
		//rest of doubleclick event usecode
	}

// Spark
void TestNPC object# (0x402) ()
{
	if (event == DOUBLECLICK)
	{
		if (!UI_get_item_flag(item, MET))
		{
			UI_set_item_flag(item, MET); // not sure what exactly triggers this and don't have time to check so set it manually
			SPARK.say("We haven't met yet");
		}
		else
			SPARK.say("Back already?");

		var options = ["name", "job", "bye"];

		if (UI_get_item_flag(LORD_BRITISH, MET)) // his met does trigger fine when talking to him
			add ("Lord British");

		converse(options)
		{
			case "name":
				say("\"Insert Name Here\"");

			case "job":
				say("\"Insert Job Here\"");
				add(["whatever"]);

			case "whatever":
				say("\"other added conversation\"");

			case "Lord British"(remove):
				say("\"Try dropping a sign on his head.\"");

			case "bye":
				say("\"Goodbye.\"");
			break;
		}
	}
}