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:     I'm looking for a white purse as a gift . Could you show what you have in stock ?  
 Person2:  You are in luck . We just receive a shipment of several different styles of white purses .  
 Person1:      They must be popular again this season .  
 Person2:  Yes , I believe they are . Here are something that might interest you .  
 Person1:      Wow . this is nice . I'll take this one . I guess if she doesn't like it she can return it , right ?  
 Person2:  Sure . Let me ring this up for you at the register . If you would like , this can be gift-wrapped for free . Just take it to the customer service department . 

1