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:     welcome back ! How was your vacation ?  
 Person2:  it was fantastic , but I'm glad to be back ! Being a tourist is really tiring !  
 Person1:      where did you end up going ?  
 Person2:  because it's off-season , we got a really good package deal to Paris , so we went there .  
 Person1:      I've always wanted to go to Paris . The Eiffel Tower is one of the most famous tourist attractions in the world ! Did you go to the top ?  
 Person2:  that was the first thing we did . I have a few pictures . Do you want to see them ?  
 Person1:      sure . What's this one a picture of ?  
 Person2:  oh , that's a picture of me on our fourth day of travelling . I'm standing next to a famous foundation in the centre of the city .  
 Person1:      you don't look very happy in that picture .  
 Person2:  no , by that time , I was sick of sightseeing . I had had enough of art galleries , cathedrals , fountains , statues , and palaces !  
 Person1:      so what did you do ?  
 Person2:  we spent that afternoon walking around a flea market . We had a few coffees , watched a movie , and went for a swim in the pool at the hotel .  
 Person1:      my travel agent always reminds me to plan a day of relaxing for every 3 days of sightseeing . Did you go to the Louvre ?  
 Person2:  of course ! You can't go to Paris without going to their famous art gallery ! I was surprised by how small the Mona Lisa was though .  
 Person1:      that's what everyone says ! I can't wait to see it for myself some day . 

1