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 can you keep in touch with your aunt in America ?  
 Person2:  Oh , I make a phone call once a month .  
 Person1:      It's very expensive , right ?  
 Person2:  Yeah .  
 Person1:      Why not send E-mail through the Internet ?  
 Person2:  Is it convenient and cheap ?  
 Person1:      Sure . You can send E-mail to each other every day through the internet . In addition , you can make a phone call through the internet , too .  
 Person2:  Really ? I'm so glad to hear that.But I don't know how to get access to the Internet.Could you show me ?  
 Person1:      No problem . I'll tell you .  
 Person2:  I'll appreciate it very much . 

1