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:     Excuse me . How much for one are these ?  
 Person2:  Un .. Those are 25 dollars each .  
 Person1:      OK . Say I was to buy four , could I get a discount ?  
 Person2:  Well , I could offer you maybe 10 percent off .  
 Person1:      Oh , I was hoping to get one free . Like four for 75 dollars .  
 Person2:  This one I'd better chat with the manager . Could you give me a second ? 

1