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:     Have any plans for the weekend , Tom ?  
 Person2:  Yes . I am going for a hike around the Qinghai Lake .  
 Person1:      Oh , do you go hiking often ?  
 Person2:  I go as much as I can . I love hiking , because you can really get in touch with nature .  
 Person1:      It would be nice to get out of the city . Do you want some company ?  
 Person2:  Sure . But it will be a long hike 30 miles in three days . Have you been hiking before ?  
 Person1:      Yeah , I go a lot too . I saw a bear and a lion on my last hike .  
 Person2:  Wow . You must have been pretty far away from the city .  
 Person1:      Yeah , my friend and I hiked in a very wild part of the national forest .  
 Person2:  Well , bring him along to . We will have a great time this weekend .  
 Person1:      Thanks . I will ask him . 

1