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:     Excuse me , do you know where the Post Office is ? 
 Person2:  Yes , it's not very far from here . Follow this road until you get to the traffic lights . You will see a small restaurant at the corner . 
 Person1:      Is the restaurant on the right or on the left hand side of the road ? 
 Person2:  It is on the right . But it is on the other side of the lights . 
 Person1:      OK . Do I turn on the lights or do I go straight ? 
 Person2:  You go straight on at the lights , but just past the restaurant building there is a small road to your right . 
 Person1:      And do I take that road ? 
 Person2:  Yes , you need to turn right and follow that road for about four minutes . You will see the Post Office on your left . 
 Person1:      Is there a Post Office sign on the building ? 
 Person2:  Yes and it is quite a big building so you won't miss it . There is also a small supermarket next to it . 
 Person1:      Thank you very much . 
 Person2:  You're welcome . 

1