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:     May I help you ?  
 Person2:  What time will the library be closing ?  
 Person1:      It closes at six .  
 Person2:  Does it always close at six ?  
 Person1:      No , not every day .  
 Person2:  Will the library be open on Saturday ?  
 Person1:      Absolutely .  
 Person2:  What are your hours on Saturday ?  
 Person1:      Saturday ’ s hours are from nine in the morning to six-thirty at night .  
 Person2:  All right . Thank you .  
 Person1:      What else can I help you with ?  
 Person2:  That ’ s it . Thank you . 

1