Help creating "quest"

[Slayden]

I'm going to take a swing at this, though I'm still rather new & trying to teach myself how to write quests and etc. If someone more experienced than I could correct me, please do.

sub EVENT_SAY {
if ($text~= /Hail/) { quest::say("Greetings friend and welcome to the world of Norrath. Are [you interested in some gear] to help you get started?"); }
if($text=~/i am interested in some gear/i){
quest::say("Here you go my friend. Now please don't loose these precious items, as I will not assist you any further.");
quest::summonitem(#####);}
}
quest::summonitem(#####);}
}

(Replace the ##### with the item numbers of your choice)
I don't know yet (if possible) how to flag a character for non-repeat.
I hope this helps.