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:     May I help you ?  
 Person2:  Yes , I'd like to buy these razors .  
 Person1:      Okay , that'll be $ 6.85 with tax . 

1