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:     How do you usually part your hair ? 
 Person2:  To the right . 
 Person1:      ( The hair stylist cuts the customer's hair . ) Almost done . I just have to even things up a bit . ( She shows the customer the results . ) Will that do ? 
 Person2:  Looks good . 
 Person1:      Would you like a shave ? 
 Person2:  No , thanks . 
 Person1:      Okay , let me brush you off . Thank you very much for coming . 
 Person2:  Thank you . 

1