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:     We have a holiday next week , don't we ?  
 Person2:  Yes , on Monday .  
 Person1:      What're you going to do ?  
 Person2:  I'm probably going to spend the day looking at cars .  
 Person1:      At cars ! You aren't thinking about buying a car , are you ?  
 Person2:  Yes , I am . I'd like to be able to get around a little more .  
 Person1:      But it will be expensive to have a car in the city , won't it ?  
 Person2:  Oh , I don't know.Of course , gasoline costs a lot these days .  
 Person1:      But what about parking ? You can't park on the street , can you ?  
 Person2:  A lot of people do . I'll try it for a while anyway , but I certainly don't want to pay a lot of parking tickets . 

1