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 was the party like last night , Jean ?  
 Person2:  Not bad at all , thanks . There were one or two interesting people there.Why couldn't you come ?  
 Person1:      Well , I couldn't get away from work early . And when . I got home I had a headache , so I had to go straight to bed . But I was over-tired , because I wasn't able to get to sleep for hours .  
 Person2:  What a shame . Why didn't you take a sleeping pill ?  
 Person1:      I don't like them . I used to take them when I had to work overtime , you know .  
 Person2:  How many did you use to take ?  
 Person1:      Three every night .  
 Person2:  Good heavens . Why did you take so many ?  
 Person1:      Because I was under a terrible strain . The doctor saidthey weren't very strong . Anyway , I used to feel awful the next morning .  
 Person2:  I'm sure you did .  
 Person1:      The doctor said I had to be careful .  
 Person2:  He was quite right .  
 Person1:      So I stopped drinking coffee late at night instead . 

1