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:     Where do you usually do your shopping , Mrs . Lane ?  
 Person2:  I usually go to the supermarket , near the station .  
 Person1:      How do you find the prices there ?  
 Person2:  I think they are quite reasonable , and the vegetables are very fresh .  
 Person1:      I see you have bought some coffee . Would you mind telling me how much you paid for it ?  
 Person2:  Only 2 dollars and 25 cents . 

1