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:     Then I'll take them . How much ?  
 Person2:  $ 120.The small gift box is complementary .  
 Person1:      Here is $ 150.Keep the change .  
 Person2:  Thank you ! Have a nice day !  
 Person1:      You too.Bye . 

1