<human>:  What should I do if I lost my driver's license?
<bot>: If you have lost your driver's license, the first thing you should do is contact your local motor vehicle department. Depending on your state's regulations, you may need to fill out a form and provide proof of identification such as your birth certificate and Social Security Number. You may also need to pay a replacement fee. Once you have provided all of the necessary information, you should receive a new driver's license in the mail.