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:     What can I do for you ?  
 Person2:  Would you recommend some materials on the World War Two ?  
 Person1:      Have you found a particular item from the card catalogue ?  
 Person2:  Yes , but I don't think they are enough for me .  
 Person1:      Oh , maybe you can find something from the New York Times , or the Washington Post during that period .  
 Person2:  That's a good idea . Thanks a lot .  
 Person1:      You are welcome . 

1