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 was that ?  
 Person2:  Oh no . I broke your vase accidentally .  
 Person1:      How did it happen ?  
 Person2:  I bumped it by accident , but I didn't mean to do it .  
 Person1:      It was my favorite .  
 Person2:  I feel miserable . Can I give you money for it ?  
 Person1:      Maybe I shouldn't have put it here . Someone was bound to bump it eventually .  
 Person2:  First I was late for school this morning , and now I broke your vase . This isn't my day ! 

1