Answer:
<em>The dialogue would be like the following:</em>
<em>Marina:</em> Why are you going to the left?
<em>Pedro:</em> Because we are going to the supermarket.
<em>Marina:</em> But, 7th Street is always full of traffic. Don't turn left!
<em>Pedro:</em> No, the navigation app is indicating that 7th Street is the one if we want to to faster. I will turn left.
<em>Marina: </em>No, don't do that! Navigation apps are a fraude, don't turn left! The fastest way to get to the supermarket is going straight.
<em>Pedro: </em>Ok...
<em>Marina:</em> Now, speed up! There is nobody in front of you!
<em>Pedro</em>: But, I am in the speed limit, I can't go faster.
<em>Marina:</em> You really don't know how to drive! You are frustrating!
Explanation:
The main topics that people discuss over when driving the car are: <em>routes, speed and the driving style.</em> So, as Marina and Pedro are always disagreeing when driving the car, then a correct dialogue would have to include these topics, as in the one presented.
Note that the instruction is asking for a dialogue in which Marina is giving orders to Pedro, for that reason is that when<em> Marina intervenes she talks in the imperative form.</em>