Consumer Bankruptcy Law and Practice: § 1307. Conversion or dismissal
(a) The debtor may convert a case under this chapter to a case under chapter 7 of this title at any time. Any waiver of the right to convert under this subsection is unenforceable.
(b) On request of the debtor at any time, if the case has not been converted under section 706, 1112, or 1208 of this title, the court shall dismiss a case under this chapter. Any waiver of the right to dismiss under this subsection is unenforceable.