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:     Room service.What can I do for you ?  
 Person2:  Excuse me . Can you tell me where l can buy a notebook and a pen ? I need them badly .  
 Person1:      Here is a shop in the hotel . It's on the 11th floor .  
 Person2:  That's quite convenient.Well , would you please buy me some ? I am so busy.My room number is 304 .  
 Person1:      Certainly . 

1