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 , there . Welcome , and what can we assist you with ?  
 Person2:  Good morning . I have a Bill of Exchange against Bank Acceptance here . I'd like to discount it . Is that possible here ?  
 Person1:      Yes , we can do that . We require the original Trading Contract and also the VAT Invoice and the Commodity Delivery Documents . They all need to be in duplicate .  
 Person2:  Yes , I've got all that here .  
 Person1:      Do you have a copy of the ID card of the person who took care of the legal aspects of this ? The Legal Rep , I mean ? We also need the Loan Certificate as well . Do you have that ?  
 Person2:  A copy or the original ? I guess you need the original , right ? OK , I'll return shortly . 

1