Hi [Candidate Name],
Thank you so much for coming in for an interview { say when / example: today}! It was great to meet you and learn more about your qualifications. Based on our conversation, I believe that you would be a perfect fit for the [position] position we have open.
We would like to offer you the job and invite you to accept it and join our team. We understand that this may be a quick decision for you, so we are giving you some time to think about it. But as you are aware, we are looking to fill this position and don’t want to drag it out, so if it would be possible to get the answer by {say, the final date when a candidate has to decide}, that would be great.
Also, if you have any questions, please don’t hesitate to let me know. I hope that you are as excited about this opportunity as I am!
Thank you,
[Your Name]