1. the name of the class you are hoping to observe (like M E 200)
2. the name of the professor you emailed
3. the response you got from this professor (yes, no, no response)
4. what you're planning to do now (you're ready to observe, you need to email your second choice professor, etc.)

1-M E 201.
2-Tiffany A. Camp.
3-Still working on it.
4-Waiting for his answer and if it is "No" I would email my second choice.