Ms Smith: Good morning. Welcome to our exhibition: Future Cities. Here you can see models of our cities of the future. Please take a look around and feel free to ask me any questions.

Nam: This model looks very interesting. Can you tell me more about it, Ms Smith?

Ms Smith: Yes. This is a ‘green city’ designed to reduce its negative impact on the environment. As you can see, more than fifty per cent of it is made up of green areas.

Nam: I don’t see any private vehicles on the roads.

Ms Smith: Most people will use public transport such as trams and electric buses. There will be fewer traffic jams and less pollution.

Nam: So city dwellers will stop using their cars in urban areas.

Ms Smith: That's the idea.

Nam: I like it. It seems a good solution to many environmental problems.

(...)

Mai: Let’s look at the city over there. I can see robots and lots of cameras in the streets. What's special about this city?

Ms Smith: It's called a ‘smart city’. Al technologies, such as cameras and smart sensors, will be installed to help the city operate more efficiently.

Mai: The modern infrastructure of the city looks beautiful. I’m really impressed with the high-rise buildings.

Ms Smith: Tall buildings can actually limit the carbon footprint of the built environment and help solve housing problems in big cities.

Mai: Mmm, I'm thinking of living in a smart city in the future.