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:     I'd like to buy one of these refrigerators . Do I have to pay in cash ?  
 Person2:  No , we have an easy-payment plan . One-third down , and the balance in six months .  
 Person1:      Fine . Will you work out the details , please ?  
 Person2:  Certainly . Would you sit here please ? I'll call our credit manager .  
 Person1:      Thank you .  
 Person2:  It's just a formality , but for hire purchase we usually require references .  
 Person1:      What kind of references do you need ?  
 Person2:  Perhaps your employer could supply us with one .  
 Person1:      I'm sure he could , but I prefer not to bother him . Would my bank do ?  
 Person2:  Certainly . A simple letter from your bank would be quite satisfactory . 

1