Definition: You are given a conversation between two people. 'Person1:' and 'Person2:' are used to separate their respective dialogues. If the conversation begins with a question, label it '1' otherwise '0'.
Input:  Person1:     is everything alright ?  
 Person2:  yes , everything is fine .  
 Person1:      what took so long ? I thought your flight was supposed to arrive 3 hours ago !  
 Person2:  didn't they announce that our flight was delayed ?  
 Person1:      I didn't hear anything about a delay . I thought everything was running on time . What happened ?  
 Person2:  we boarded the plane on time , but then we were held up for almost an hour due to a maintenance problem .  
 Person1:      then what ? Your plane was three hours late !  
 Person2:  we finally took off , but about 30 minutes later , the captain came on the loudspeaker to warn us that there would be some bad turbulence for most of the flight .  
 Person1:      turbulence is pretty normal , isn't it ?  
 Person2:  yes , but this was the worst turbulence I'd ever experienced in my life ! Everyone started getting sick . The flight attendants had to stay in their seats . The captain decided to land early .  
 Person1:      so where did you land ?  
 Person2:  we landed in Southampton and waited an hour for the storms to pass and then took off again .  
 Person1:      that sounds like a nightmare !  
 Person2:  it wasn't too bad . At lease I'm alive .  
 Person1:      have you had anything to eat ?  
 Person2:  I managed to get a sandwich from a flight attendant . How about you ?  
 Person1:      I had a few coffees while I was waiting . Let's get out of here ! 

1