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 are you doing , awake ?  
 Person2:  I can't sleep ...  
 Person1:      But it's almost midnight !  
 Person2:  Exactly . I'm too excited for Christmas morning . Also , I thought I heard Santa .  
 Person1:      Really ? How do you know it was Santa ?  
 Person2:  Well , I heard that naughty boys and girls get coal in their stockings , so I thought I'd be nice and make Santa cookies . I even left out some milk . I heard someone in the kitchen eating the cookies , so I came downstairs !  
 Person1:      Hmm ... well I know that Santa won't come down the chimney with you hiding behind the tree , spying on him !  
 Person2:  Really ?  
 Person1:      Really ! Let's go back upstairs and get back to bed . That way , we can let Santa do his job . Then when you wake up , it will be Christmas already !  
 Person2:  O-K ...  
 Person1:      Hey , honey ! Is that you ? Don't eat all the cookies — I want some , too ! 

1