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:     Can I help you , sir ?  
 Person2:  Yes , I want to buy some grapes .  
 Person1:      What kind of grapes do you want ?  
 Person2:  People say grapes from XinJiang are much sweeter than other kinds . Please give me a kilo of that .  
 Person1:      Ok , wait a moment please .  
 Person2:  Make sure they are fresh .  
 Person1:      Trust me . 

1