[Lucases]

It's better a command, you'll just need to press T, arrow up, delete the last number and change it with a new player id.
With dialogs you'll have to click on button "back", "Teleport" many times. Use a command mate

pawn Код:

CMD:gethere(playerid, params[])
{
         new teleportedid;
         if(sscanf(params, "u", teleportedid)) return SendClientMessage(playerid, -1, "/gethere [player id]");
         if(!IsPlayerConnected(playerid)) return SendClientMessage(playerid, -1, "That player isn't connected");
         new Float:x, Float:y, Float:z;
         GetPlayerPos(playerid, x, y, z);
         SetPlayerPos(teleportedid, x+1, y+1, z);
         return 1;
}