What is an example of an abstract scene?

For my drama class, i am suppose to create an abstract scene. I asked my teacher to give me an example but she did not have the time, so i was just wondering if someone could give me an example. Here is what it says but it doesn't make sense to me Thanks in advanced! :
Study the following abstract scene:
BLUE SCENE:
A: Hi!
B: Hello.
A: What'd you do last night?
B: Not much. You?
A: TV - you know
B: Not really.
A: Later.
B: OK.
Develop the characters and a situation. Mark the end of each beat, the objective, and the action of each beat for ONE character. (either A or B). Describe the overall objective for your character and the obstacle that the other character presents to you.

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