Is everything alright ?   Yes , everything is fine .   What took so long ? I thought your flight was supposed to arrive 3 hours ago !   Didn't they announce that our flight was delayed ?   I didn't hear anything about a delay . I thought everything was running on time . What happened ?   We boarded the plane on time , but then we were held up for almost an hour due to a maintenance problem .   Then what ? Your plane was three hours late !   We finally took off , but about 30 minutes later , the captain came on to the loudspeaker to warn us that there would be some bad turbulence for most of the flight .   Turbulence is pretty normal , isn't it ? 