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:     Hello ?  
 Person2:  Hi Vicky .  
 Person1:      Are you there yet ?  
 Person2:  Yes .  
 Person1:      I just got off the subway . I'm almost there . Sorry I'm late .  
 Person2:  That's no problem . I just wanted to tell you I'm inside .  
 Person1:      Where are you ?  
 Person2:  On the second floor .  
 Person1:      Should I come to the second floor or do you want to come to the first floor ?  
 Person2:  Come upstairs .  
 Person1:      What ?  
 Person2:  Oh , Can you hear me OK ? I said , come to the second floor .  
 Person1:      Oh , OK . What are you doing there ?  
 Person2:  Just looking at some books on how to learn English .  
 Person1:      Do you want to get something to eat later ?  
 Person2:  No , I'm still full from dinner .  
 Person1:      What do you want to do ?  
 Person2:  I don't know for sure . When you get here we'll talk about it .  
 Person1:      OK , see you soon .  
 Person2:  Bye . 

1