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:     That girl looks very attractive , doesn ’ t she ?  
 Person2:  Do you think so ? I don ’ t like girls who look like that . I like girls who aren ’ t too slim . If you like her , go and talk to her .  
 Person1:      I ’ d like to , but there ’ s her boyfriend . He ’ s very broad-shouldered .  
 Person2:  He ’ s huge ! He must go to the gym to have a well-built body like that .  
 Person1:      Do you prefer tall girls or short ones ?  
 Person2:  I don ’ t mind , but I like girls with long hair .  
 Person1:      We have different tastes . I like girls with short hair . I like tall girls - probably because I ’ m so tall myself .  
 Person2:  Have you ever dated a girl taller than you ?  
 Person1:      No , never . I don ’ t think I ’ Ve ever met a girl taller than me ! Have you gained weight recently ?  
 Person2:  Yes , I have . Perhaps I should go to the gym , like that girl ’ s boyfriend .  
 Person1:      I'm getting a bit plump myself . Perhaps I ’ ll go with you . 

1