I am looking for a series of short stories that have large spaceships with A.I. that travel over large distances.
One story in the series (that is different from the others) has to do with an exoplanet that is populated with people, has a geothermal energy source, and is taken care of by an A.I. One day the A.I. makes a man (who is bored) fall in love with a girl. The man volunteers to fight in a "war" in order to impress the girl.