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:     What are you doing tonight ? 
 Person2:  I have to run to the grocery store . 
 Person1:      Don't you hate fighting the crowds on the weekends ? 
 Person2:  Yes , but I am out of food and milk . 
 Person1:      What store do you shop at ? 
 Person2:  The small one , just down the street . I like their generic brand . 
 Person1:      I have been using the store across town for years . 
 Person2:  I hear they have very nice stuff . 
 Person1:      They do , but they're a little expensive on certain items . 
 Person2:  Well , you should try my store . The prices are good . 
 Person1:      I will sometime . Thanks for the advice . 

1