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 do you do in your free time , Nancy ?  
 Person2:  Well , I like playing the violin .  
 Person1:      Really ? How long have you been playing the violin ?  
 Person2:  About ten years so far . I started learning when I was in middle school .  
 Person1:      That's really interesting .  
 Person2:  Sure . So what about you ? Do you have any hobbies ?  
 Person1:      Well , I like collecting matchbox ! I'm not sure if that counts , though .  
 Person2:  Of course it does . Everybody has his own hobby . 

1