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:     Can I help you , sir ?  
 Person2:  Yes , please . I'm picking out some presents for my children and wife .  
 Person1:      What kind of presents do you want ?  
 Person2:  Actually , I don't know exactly . Do you have anything recommended ?  
 Person1:      OK . How about some very cool sneakers for your children ? Anyway , it won't cost you much . It's only around $ 59.95 for each pair . It might be cheaper than that in America .  
 Person2:  Hey , How did you know I came from America ?  
 Person1:      Just a hunch , sir .  
 Person2:  How much again ?  
 Person1:      $ 59.95 .  
 Person2:  That's really cheap for shoes like those . OK , I'll take 5 pairs .  
 Person1:      Sorry , sir .  
 Person2:  Why not ?  
 Person1:      Because in this duty-free shop , your total expenditure cannot be over $ 300 and you also have one more present to buy for your wife .  
 Person2:  Oh , my God . I've totally forgotten about that . Anyway , I think she would like a bottle of perfume .  
 Person1:      That's good . And I can also recommend you a good one . It's the brand of DENY .  
 Person2:  DENY ? That's very expensive in America . It costs nearly $ 70 for only 50ml.DKNY ?  
 Person1:      It's $ 60 here .  
 Person2:  That's very unbelievable . Is it fake ?  
 Person1:      Of course not , sir .  
 Person2:  OK , I'll take one . 

1