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 , is you , John ?  
 Person2:  Oh , Jane . What on earth have you been ? I've called you a thousand times .  
 Person1:      Sorry , John . I suddenly got a severe stomachache last night , and stayed in hospital the whole day .  
 Person2:  But I called your cell phone , and there was no answer .  
 Person1:      I know , I left it at home .  
 Person2:  Do you feel better now ?  
 Person1:      It's OK now . Don't worry , John . 

1