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:     Did you go to the concert last weekend ? 
 Person2:  No , I didn't . And you ? Was it good ? 
 Person1:      Yes , I did . I enjoyed it a lot.There was a folk singer , a violinist and a pianist . 
 Person2:  How much was the ticket ? 
 Person1:      I only paid two dollars for mine . 

1