Hi {customer_name},

Your appointment with {business_name} has been approved. Here are the details:

Date: {booking_date}
Time: {booking_time_start}
Service: {service_name}
Staff: {staff_name}

If you have any questions or need to make changes, please feel free to contact us.

Thank you for choosing {business_name}. We look forward to seeing you soon.

Best regards,
{business_name}