[Gazmull]

pawn Код:

new name[MAX_PLAYER_NAME], string[64 + MAX_PLAYER_NAME];
    GetPlayerName(playerid, name, sizeof(name));
    format(string, sizeof(string), "Good Day Sgt.%s", name);
    ShowPlayerDialog(playerid, 11, 0,"Sergeant's Reinforcement", string, "OK", "CANCEL");

If you can't make one format .