Did the bell just ring for the next class and you still have a student from last period in your room? Send them quickly to their next class with this pass.
All you need to write is...
You don't need a reason when the pass already says “My apologies, I was speaking with this student about something important.”
--My Experience in the Classroom--
I print these on colored card-stock to make them easy to spot, grab, fill, and give. When other teachers saw them, they emailed me to make them their own! If they found it useful, I thought you might, too