帮我编一个英文对话是关于新闻的对话

should private cars be encouraged?
A:no,private cars should not be encouraged because more cars would cause more pollution to the air since this will increase the amount carbon dioxide released in the air,which will make the global warming happen faster.
B:certainly,private cars make personally lives much easier by providing convenience to the owners of the cars; the owners of the cars can drive the cars around when they need to,and the private cars can save a lot of time.
A:you are right in that aspect.however,if everyone owns a car,then the pollution in the air will become a lot more intensified,and we don't want that to happen because we want to live in a safe and happy environment.we don't want to face global warming at an earlier time than we need to.also,public transportation is very convenient too,private cars are not the only things that can provide us our needs.
B:but still,don't you think public transportation takes too long?
A:you are only concerning our everyday lives,you are not looking at our future.in the long run,private cars will not benefit us at all if global warming occurs.public transportation only takes a little bit more of our time everyday,also we can walk too and it's also healthier for you if you walk because it's an exercise.if you drive around all the time then you won't get any exercise.
B:that's true.so i guess we shouldn't encourage private cars.
above are my personally opinions,hopefully it's helpful to you.:)