Hi Cathy and Heather,
Your last shift this weekend! Wow, this year just flew by. I hope you've enjoyed your time with us and speak fondly of your experience. :) It's definitely been a pleasure working with both of you.
There's a couple of things I need you to email me:
1. What were the best parts of the job, and what did you not like about it?
2. What did you feel were the busiest times of your shift?
3. What changes would you like to see us make (in terms of the position, website, etc.)?
Many thanks to both of you for all you've done for us! Best of luck with finishing up your work at SLIS (whether in April or over the spring term). Let me know if you need me to be a reference for future jobs.
All the best,