Insert an appropriate closing salutation to this email
Dear Bob,

I am writing to remind you of our appointment on Thursday. Please don't forget.
Dear Bob,

I am writing to remind you of our appointment on Thursday. Please don't forget.

Sincerely,
[Your Name]
<sys>[INST] Insert an appropriate closing salutation to this email [/INST] Input:
Dear Bob,

I am writing to remind you of our appointment on Thursday. Please don't forget. </sys>