A Psalm For The Wild & Built A Prayer For The Crown-Shy By Becky Chambers

Becky Chambers' Monk and Robot is a delightful sci-fi novella series that guides readers through a philosophical adventure. 

It's been centuries since the robots of Panga gained self-awareness and laid down their tools; centuries since they wandered, en masse, into the wilderness, never to be seen again; centuries since they faded into myth and urban legend.

One day, the life of a tea monk is upended by the arrival of a robot, there to honor the old promise of checking in. The robot cannot go back until the question of "what do people need?" is answered.