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 date is today ? 
 Person2:  Why ? 
 Person1:      Didn't you notice the roses everywhere ? 
 Person2:  I hear it's Chinese Valentine's Day ! Don't you know ? 
 Person1:      Oh , God . I just forgot it . I should have brought roses for my girlfriend . 
 Person2:  It's not too late . Go to buy some now . 

1