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 , Shelley . Have you had lunch ?  
 Person1:      Not yet .  
 Person2:  So shall we have lunch together ? I ’ d like to take you this time .  
 Person1:      I ’ d like to , but I can ’ t .  
 Person2:  How come ?  
 Person1:      I ’ Ve a lot of paper work to do right now . I ’ m behind schedule .  
 Person2:  All right . Can we make it another time ?  
 Person1:      Sure , thanks .  
 Person2:  I ’ ll call you later . Bye .  
 Person1:      Bye . 

1