You will find quests scattered around each field. Among them, chain quests can greatly influence the area itself.
As an alchemist, Firis can accept quests in various places during her journey. Some quests have multiple solutions. The solution you choose can change the outcome of the quest, or start different quests afterwards.
This man wants Firis to collect certain materials. The request doesn't seem too difficult, so you accept it.
*Images are from the PlayStation®4 development version.