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:     What are your hobbies , Mr . Green ?  
 Person2:  I like collecting stamps .  
 Person1:      But it's an expensive hobby , isn't it ?  
 Person2:  Yes , you're right . What do you like to do in your spare time ?  
 Person1:      I usually play chess with my friends . But I like playing basketball best .  
 Person2:  Do you play basketball well ?  
 Person1:      No , I'm not very good at it . I play just for the fun of it .  
 Person2:  Shall we have a game together some day ?  
 Person1:      OK , that'd be very nice . 

1