Pros: My ticket was with Lufthansa but the airline was in fact United Airlines. My original flight was from Paris to Newark. The United flight was cancelled with no explanation. So there was nothing to like.
Cons: The United flight was cancelled with no explanation. My orignal ticket was for a direct 8 hour flight. When my flight was rescheduled it was with a connection in Washington, D.C. with a 4 hour lay-over. I arrived home almost 5 hours later than scheduled. Awful experience!