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 can I help you with today ?  
 Person2:  When does the library close ?  
 Person1:      The library closes at six o ’ clock .  
 Person2:  Does it close at that time every day ?  
 Person1:      Not always .  
 Person2:  Is the library open on Saturdays ?  
 Person1:      Yes .  
 Person2:  What time do you open and close on Saturday ?  
 Person1:      The hours are from 9 am - 6  
 Person2:  Okay . Thank you very much .  
 Person1:      Do you need anything else ?  
 Person2:  No , that ’ s all . Thanks . 

1