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:     Hi . I need a wake-up call tomorrow .  
 Person2:  What time would you like your wake-up call ?  
 Person1:      I need two calls , one at 7 and another at 7 fifteen .  
 Person2:  That is no problem at all , of course . You'll get a call at 7 o'colock and another at 7 fifteen .  
 Person1:      Then again , I think 7 fifteen is too early . Change 7 fifteen to 7 thirty , please .  
 Person2:  So , that'll be a call at 7 and another at 7 thirty.Do you have any other requests ?  
 Person1:      Not just now , but if I do think of something later , I'll give you a ring .  
 Person2:  Okay , sir . Sleep well . 

0