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:     Are you sure it was him ?  
 Person2:  I used to date him . Of course it was him .  
 Person1:      You're a nurse at New York General Hospital ?  
 Person2:  Yes , on the cancer ward . And Taylor was there . He walked right by me and didn't even see me .  
 Person1:      Maybe he was just visiting someone .  
 Person2:  But you saw how skinny and pale he looks . He has " cancer patient " written all over his face . 

1