Dear Mr Leung,
I’m writing to you regarding the position for the Assistant Account Executive. As you know we had a lot of candidates with high skills. After considering your application we’ve decided that you are not suitable enough for this job. We think that your CV is very complete but there was another candidate that had the exact skills that we were looking for. We are going to keep your contact details for another future opportunity.
Please don’t hesitate to contact us if you require further information.

By Fumiko, Iris