Dear (recipient's name),
I sincerely enjoyed meeting with you yesterday and learning more about possible accounting positions at (company).
Our conversation confirmed my interest in becoming part of (company)'s staff. I was particularly excited by the possibility of working as part of a strategic planning team in your internal accounting department. I feel confident that my past experience both in auditing and accounting in hospital settings would enable me to fill your needs effectively.
Please contact me if I can provide you with any further information. I look forward to hearing from you by (date) as we discussed. Thank you again for the courtesy that you extended to me.
Sincerely,
(your name)