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:     Hi , Mary . You look pale today . What's the matter with you ?  
 Person2:  I think I've caught a cold . Now I'm aching all over .  
 Person1:      You'd better take some medicine and have a good rest . I hope you'll be yourself pretty soon .  
 Person2:  Thank you . I suppose I should go to see a doctor . 

1