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:     Excuse me . Is this seat taken ?  
 Person2:  No , it isn't .  
 Person1:      Am I on right bus to Chicago ?  
 Person2:  Oh , no . This is going in the opposite direction .  
 Person1:      Oh , my God !  
 Person2:  I suggest you get off at the next stop and ask again at the station .  
 Person1:      I will . Thank you . 

1