I'm not sure what you mean when you say can I become a pilot or flight attendant with commerce. What I can speak to is that my mother has been a pilot for a major airline for the last 19 years. Her dream was to fly and she put a lot of hard work into pursuing her pilots license. To start, I would recommend researching some of the major airlines and identify skill sets for both pilots and flight attendants, compare those skill sets to the skills you have and see if one of the positions interests you more. From there identify how you get from where you are today in high school to where you want to be and create a plan to work toward that goal.
I'm sure that if you work hard and are passionate about learning, you can have a career as a pilot or flight attendant. These are great jobs!
Tim recommends the following next steps: