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 pay my bill here ? 
 Person2:  Yes , sir . 
 Person1:      How much is the charge ? 
 Person2:  Let me see ... it's $ 50 . 
 Person1:      Do you receive checks ? 
 Person2:  Sorry , sir . We receive credit card and cash only . 
 Person1:      Here is my card . 

1