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:     The summer vacation is coming . Have you any plans ?  
 Person2:  I haven't made up my mind . Maybe I will go to the US . What about you ?  
 Person1:      I am going on a hiking trip . It's good exercise as well as fun .  
 Person2:  I think so .  
 Person1:      So why not come and join us ? Lee will come as well .  
 Person2:  That's great . I will go hiking with you . 

1