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:     Excuse me , what do you want for this bag ?  
 Person2:  Let me see . That one goes for $ 17 .  
 Person1:      Would you take $ 12 ?  
 Person2:  No , I can ’ t give it to you , let you have it for 12 . How about 14 ?  
 Person1:      13.50 ?  
 Person2:  Sorry , $ 14 is the lowest I can go . 

1