I wasn't sure, since the quest wasn't taken, if I had to confirm or something or if it was set already. It seemed like maybe?
No there isn’t a confirmation process right now, your quest are pickable by adventurers during the night. There’s a few rng involved and if you are looking for some rare item (the only example here being the diamond), this boost the difficulty of the quest so much the adventurers aren’t quite skilled enough to take it and nobody will take the quest.