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:     I have a terrible toothache .  
 Person2:  Which tooth is it ?  
 Person1:      ( Pointing ) This one here .  
 Person2:  Ah , yes . There's big cavity .  
 Person1:      Can you fill it ?  
 Person2:  I'm afraid not . The tooth is too far gone . It'll have to be taken out .  
 Person1:      Then I might as well have it out now .  
 Person2:  You'd better wait . The gums are swollen . Take the medicine I prescribe and come back in three days . 

0