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:     Thanks for lunch . It was delicious .  
 Person2:  It's OK .  
 Person1:      Next time lunch is on me .  
 Person2:  Don't be silly .  
 Person1:      I'm serious .  
 Person2:  All right . Next time you will treat .  
 Person1:      It's a deal . 

0