Dear %customer_full_name%,

Good news! A spot has just become available for
%service_name% on %appointment_date_time%.
                 
You’re on the waiting list, and now is your chance to confirm your booking before it’s taken by someone else.
<a href="%appointment_approve_url%">Confirm My Appointment</a>
                 
Thank you for choosing our company,
%company_name%