My wife and I are heading to Europe next spring and I'm trying to figure out the best way to construct our flights. We'll be flying MCI-CDG outbound, then FLR-MCI on the way back. I'll be using United miles to book a Star Alliance award. I'd like to fly business class on the way to Paris, then coach on the way back from Florence. Is it possible to do an open-jaw, round-trip award with two different cabins like this? Or should I just plan on booking two one-way awards, one business and one coach? If anyone is wondering, I don't want to do business on both legs simply to conserve some miles. But on the first leg, it'd be nice to have it to get some sleep.