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 , do you have any tickets for the show tonight ?  
 Person2:  Sorry , it ’ s all sold out .  
 Person1:      Well , do you have any for tomorrow ?  
 Person2:  We have tickets for the matinee . It starts at 3p . m .  
 Person1:      Ok . I ’ ll take it .  
 Person2:  Where would you like to sit ?  
 Person1:      Do you have anything in the middle section ? I want a good view , but sitting too close hurts my eyes .  
 Person2:  Certainly . 

1