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:     Where is some fresh produce that's on sale ?  
 Person2:  Well , I think you'll like the mangoes .  
 Person1:      I've never had a mango .  
 Person2:  It's a fruit . It has a big stone in it .  
 Person1:      Can you eat the stone ?  
 Person2:  No . You would break all your teeth on it .  
 Person1:      How much are these mangoes ?  
 Person2:  The sale price today is $ 1 each .  
 Person1:      Can you describe their taste ?  
 Person2:  They usually taste sweet , but they remind me of an orange .  
 Person1:      How can I tell if they're ripe ?  
 Person2:  Don't cut into them until you can feel that they're soft on the outside .  
 Person1:      What country produces them ?  
 Person2:  They come from tropical countries . 

1