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 you help me figure out how to use this vending machine ?  
 Person2:  Yes , I would be happy to help . What do you want to buy ?  
 Person1:      I want to buy that candy .  
 Person2:  OK . So this machine will make change if you need it . Do you have your dollars ready ?  
 Person1:      Yeah , so far , so good .  
 Person2:  Next , you feed your dollars into the machine in the slot . Make sure they are smooth .  
 Person1:      Yeah , I already knew that .  
 Person2:  I'm sure you know that if the dollar gets stuck , you might have to re-feed it .  
 Person1:      OK , let's move on !  
 Person2:  Now you just make your selection and pray . If nothing comes out , try again or call the number on the side of the machine .  
 Person1:      I hope it works !  
 Person2:  Well , good luck ! 

0