In need of a scene/character please? =)

I'm in need of a bit of help for a character/scenario,
In September I have an audition for a Theatre, and they've asked me to act out a character similar to my age, and to come up with a speech/scene for it, but I'm not sure what to make it about, so do bạn guys have any ideas please?
Here are some details:
16-19 years old
Female
Must be no longer than two minutes

Maybe bạn have a scene that I could act out?
Any help would be appreciated, thanks! =)