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:     Where's Bill ? The ambassador is already here . The meeting is set to start at 9 am .  
 Person2:  He's late again . Traffic is probably holding him up . You know , he commutes from the suburbs . It's not easy commuting every day . We should cut him some slack .  
 Person1:      Even though the traffic is bumper-to-bumper out there , I don't think it's heavy traffic that makes Bill late . He takes the train , remember ?  
 Person2:  Oh , that's right . Well , the train shouldn't be late . That means there is only one explanation ... Bill must have overslept .  
 Person1:      Well , to be fare , since he's coming all the way from Lancaster , he's got to get up much earlier than the rest of us . He must get start on his commute about six thirty , no telling what time he actually gets up .  
 Person2:  That's right , because he's got to get to the train station from his house , then take the blue line into the city , then switch trains to the red line . In all , the trip's got to take more than 2 hours .  
 Person1:      Why doesn't he just drive to work ?  
 Person2:  It's too difficult to park your car in the city . Also , the traffic coming in from the suburbs is a nightmare . 

1