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:     Pam , where's the closest ATM ?  
 Person2:  It's not that far . Do you see that Yellow building over there ?  
 Person1:      The big one or the small one ?  
 Person2:  The big one .  
 Person1:      Yes .  
 Person2:  It's right next to it , on the right .  
 Person1:      Do you know if there's a convenience store around here ?  
 Person2:  I don't think there's one around here . The closest one is on 3rd street , but that's probably closed now .  
 Person1:      I really need to get some things before I leave .  
 Person2:  Well , you could go down to 22nd street . There are lot of stores down there that are open 24 hours a day .  
 Person1:      Can I take the subway to get there ?  
 Person2:  Yes , but that'll probably take about half an hour . You should just take a cab .  
 Person1:      Won't that be expensive ?  
 Person2:  No , from here I think it's only about 5 dollars . 

1