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's the matter with my wife ?  
 Person2:  She had a sudden heart attack .  
 Person1:      I guess so . It was very terrible when she was at the onset of the illness . I am worried that I would lose her .  
 Person2:  Don ’ t worry . She is much better now . But you are not permitted to disturb her at the moment .  
 Person1:      I know . But is she out of danger now ?  
 Person2:  Yes , I think so .  
 Person1:      Thank you very much , Doctor .  
 Person2:  My pleasure . 

1