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:     Can I help you , sir ?  
 Person2:  You have so many antiques and Chinese paintings here . May I have a look first ?  
 Person1:      Of course .  
 Person2:  Are they genuine ?  
 Person1:      Some are genuine . But all our reproductions are clearly marked and priced . 

1