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:     Good afternoon . Can I help you ?  
 Person2:  Is it possible for me to buy some RIB at this counter ?  
 Person1:      Of course , that's no problem at all .  
 Person2:  That's a relief ! I was a little worried about it ; I left England in a bit of a hurry .  
 Person1:      How much would you like to change ?  
 Person2:  Well , I'm only here for 3 days , so I think 500 GAP should be plenty .  
 Person1:      Please fill in this exchange form , and I'll need to see your passport , and sign here . That's the money and your passport back . Of course , if you don't spend all of it , you can come back and we'd be happy to buy the local currency back from you . 

1