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:     Where do you have to go .  
 Person2:  To New York .  
 Person1:      When do you have to be there .  
 Person2:  Tomorrow morning .  
 Person1:      How long do you have to be there ?  
 Person2:  Three days .  
 Person1:      When will you be back ?  
 Person2:  On Friday . 

1