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:     Hey , Gary , great to see you again . Please have a seat . So tell me , what seems to be the problem ?  
 Person2:  Thanks , doc . I ’ Ve got a really bad toothache ! I can ’ t eat anything , and look , my face is all swollen . I think it might be my wisdom tooth .  
 Person1:      Well , let ’ s have a look . Open wide . Hmm ... this doesn ’ t look good . Well , it looks like you have a cavity and your crown is loose . We ’ ll need to put in a filling before it gets any worse , and the crown probably needs to be refitted . I ’ m going to order some x-rays .  
 Person2:  Is it gonna hurt ?  
 Person1:      No , not at all ! Just lay back and relax .  
 Person2:  Ok , spit . 

1