Request for NPC

[Leman]

Hi. Can somebody make a NPC script for me? It looks like:
Player: Hi
NPC: Hi. Are you coming from king?
Player: yes
NPC: Are you wanna make some missions for me?
Player: yes
NPC: Okey, then give me 100 minotaur leather, 10 crystal coins, 50 vampire dusts and 1 plate armor. Are you {have} that items?
Player: yes
NPC: Ok thanks.
//End of conversation
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If player do this mission says again Hi and npc says:
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NPC: I see you are really wanna have acces for this city. So now give me 15 fishes, 15 small diamonds, dragon shield and 15 crystal coins. Are you {have} that items?
Player: yes
NPC: Thank you very much. Now you have acces to the city. Good luck!
//End of conversation
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Now if player will says hi to npc he will say: "You have acces for the city. I can't do anything more for you."
Can somebody write/give me this code?

 

[Landera]

if people gonna help you they will ask what version TFS you have

 

[Limos]

http://otland.net/threads/collecting-items-missions.164797/

How should the acces to the city be? With stepin/pushback?

 

[Leman]

With stepin i can do script. But missions i need.
TFS: 0.3.6

Ok thanks.