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:     Good afternoon . I believe that this house is for sale .  
 Person2:  That's right .  
 Person1:      May I have a look at it please ?  
 Person2:  Yes , of course . Come in .  
 Person1:      How long have you lived here ?  
 Person2:  I have lived here for twenty years .  
 Person1:      Twenty years ! That's a long time .  
 Person2:  Yes , I have been here since 1976 .  
 Person1:      Then why do you want to sell it ?  
 Person2:  Because I have just retired . I want to buy a small house in the country .  
 Person1:      How much does this house cost ?  
 Person2:  6850 pound .  
 Person1:      That's a lot of money !  
 Person2:  It's worth every penny of it .  
 Person1:      Well , I like the house , but I can't decide yet . My wife must see it first .  
 Person2:  Women always have the last word . 

1