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:     Do you like ice skating ?  
 Person2:  I have never tried it .  
 Person1:      Then you've got to try it . Let's go to the skating rink on Thursday .  
 Person2:  Sorry , I don't think I can .  
 Person1:      Friday then . How about it ?  
 Person2:  Friday is great .  
 Person1:      It's settled then . 

1