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:     Hi , Mr . Smith . Are you enjoying the cookout ? You don't look too happy . 
 Person2:  I spent the morning at the cemetery . I put flowers on the graves of my old war buddies . 
 Person1:      Is that what people usually do on Memorial Day ? 
 Person2:  They should . This holiday is about remembering our war dead . But people these days think it's just a holiday for summer sales and cookouts ! 
 Person1:      I'm sorry to hear that . Thank you for telling me a little more about it . 

1