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 ? 
 Person2:  Yes , can I return this article , please ? 
 Person1:      May I know the reason , madam ? 
 Person2:  You see , I bought it for my husband , but he doesn't like it . 
 Person1:      When did you buy it ? 
 Person2:  Last Saturday . 
 Person1:      Can I see the receipt ? 
 Person2:  Yes , here you are . 
 Person1:      Well , if there is no damage , you can return it . 

0