How may I help you? Ahh ... my patented special sauce huh? You need that for the big feast for the Carnival? Hmmm ... my mom gave me this, so I don't know if I should give this to a stranger like you, unless you can do me a favor ...
Accept
The 'favor' is pretty simple actually. My mom's birthday is coming up in a few days. I'd love to get her a pretty 4021000 necklace, but I'm seriously lacking 4021000. Can you get me 1 4021000?
Decline
It's not that difficult a favor, not something you'd say no to without even hearing about it one bit. If you really need my special sauce, then please come talk to me. I'll see you around.