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 much are these apples ?  
 Person2:  Let me weigh them for you . 1.5 $ .  
 Person1:      Do you accept coupons ?  
 Person2:  Yes .  
 Person1:      Here are my coupons . Is that enough ?  
 Person2:  You have to pay $ 0.5 more . 

1