From the introduction:
It's best if the quest-giver is someone the party already knows and likes, however there's an NPC below you can use if they're just responding to a quest posting. The party is hired to speak with the Master of Trade, find out why shipments have stopped, and if possible convince them to resume. The quest-giver makes a point that they may need to “grease some hands” and gives them permission to offer a rate increase of 10%. They're told dwarves are stubborn and suspicious of the outside world and those who come from it. Trade with dwarves often shuts down, usually because someone new in the supply chain wants more money or if winter doesn't come exactly on time that year. They receive a sealed letter that politely asks the Master of Trade about the disruption in shipments and names the party as speaking on her behalf. They're told not to lose the letter or open it.