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:     How did you do in the last quiz ? 
 Person2:  I doubt if I can pass it . 
 Person1:      Don't be so worried , You know Professor Robert is not too strict . 
 Person2:  But I often skip his classes , and he doesn't like me . 
 Person1:      I hope you'll do better in the final . 
 Person2:  I must , if I want to pass the course . 

1