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:     How do you usually sell your products now ?  
 Person2:  I'm doing business through Internet now .  
 Person1:      Oh , really ? Is it a good way ?  
 Person2:  Yes , very good .  
 Person1:      What advantages does it have ?  
 Person2:  It is very convenient . You know you can browse the website and send e-mails to your customers at any time .  
 Person1:      Yes , if we do business through other ways , it will cost a lot of time .  
 Person2:  Also it has low cost , and you know you only need to pay the fee of Internet , which is very cheap .  
 Person1:      Yes , going abroad to join the exhibition will cost much . But does it have any disadvantages ?  
 Person2:  To be frank , sometimes it is not so safe as doing business through traditional ways .  
 Person1:      You mean there may be credit problems ?  
 Person2:  Yes , but if you choose some good B2B websites , such problems can be avoided .  
 Person1:      Will you give some suggestion ?  
 Person2:  Of course , such as the Alabama , which is a famous website .  
 Person1:      Thanks . Maybe I will do business through Internet in the future . 

1