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:     How do I buy my textbooks ?  
 Person2:  Do you have your book list for your class ?  
 Person1:      Yes , I have my list .  
 Person2:  Fine . Once you have it , you can go to the bookstore . Do you know where that is ?  
 Person1:      Yes , I know where the bookstore is .  
 Person2:  OK , so once you pass the gym , it's the first door on your left . Do you know you can also sell your used textbooks there ?  
 Person1:      No , I didn't know I could do that .  
 Person2:  You just take them with you and trade them with the used textbook man just outside the door . Do you think you will be going there today ?  
 Person1:      Yes , I am going today .  
 Person2:  Well , if you decide to go , I could meet you over there at 1  
 Person1:      Yes , thank you . That would be great .  
 Person2:  Well , then , I'll talk to you later . Have a good day ! 

1