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 do for you ?  
 Person2:  I would like to use the copy machine .  
 Person1:      The machine is over there .  
 Person2:  Do I have to pay to use the machine ?  
 Person1:      Yes , you will have to pay to use it .  
 Person2:  How much ?  
 Person1:      It costs ten cents a copy .  
 Person2:  Am I limited to a certain number of copies ?  
 Person1:      You can copy as much as you ’ d like .  
 Person2:  Could you show me how to use the copier ?  
 Person1:      The instructions for the copier are posted on it .  
 Person2:  That ’ s fabulous . Thank you . 

1