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:     Hi , Robert . What happened to your face ? It looks swollen . 
 Person2:  I had to go get a cavity filled today . 
 Person1:      Did it hurt ? 
 Person2:  I don't even wanna talk about it . It killed me ! 
 Person1:      How long were you in the chair ? 
 Person2:  It took quite a while , but the worst part was getting numbed . They had to give me 3 shoots . 
 Person1:      Well , I guess you've learned a good lesson , huh . You have to take good care of your teeth . 
 Person2:  No kidding . Not only can ’ t I stand the pain , but man ... dentists are expensive . The bill is going to be humungous ! 
 Person1:      Don't you have a dental insurance ? 
 Person2:  I do , but it still does not cover everything . 

1