Why wouldn't you want to take photos of the city from above? Maybe you could get a photo of your home, the school, some of your favorite places in the city.
Don't forget photos of everyone in the helicopter with you, the flight crew, have someone take photos of you in the air as well, you may never get to do this again, and I doubt you will ever say "I wish I took less photos when I went up in the helicopter". A photo of everyone with the helicopter on the ground will probably be the one you keep in your office so be sure you hand the camera to someone that knows what they are doing for that shot because that will be your display photo.
Enjoy your flight.