<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:

def reboot(timeout=5, in_seconds=False, wait_for_reboot=False,  # pylint: disable=redefined-outer-name
           only_on_pending_reboot=False):
    '''
    Reboot a running system.

    Args:

        timeout (int):
            The number of minutes/seconds before rebooting the system. Use of
            minutes or seconds depends on the value of ``in_seconds``. Default
            is 5 minutes.

        in_seconds (bool):
            ``True`` will cause the ``timeout`` parameter to be in seconds.
             ``False`` will be in minutes. Default is ``False``.

            .. versionadded:: 2015.8.0

        wait_for_reboot (bool)
            ``True`` will sleep for timeout + 30 seconds after reboot has been
            initiated. This is useful for use in a highstate. For example, you
            may have states that you want to apply only after the reboot.
            Default is ``False``.

            .. versionadded:: 2015.8.0

        only_on_pending_reboot (bool):
            If this is set to ``True``, then the reboot will only proceed
            if the system reports a pending reboot. Setting this parameter to
            ``True`` could be useful when calling this function from a final
            housekeeping state intended to be executed at the end of a state run
            (using *order: last*). Default is ``False``.

    Returns:
        bool: ``True`` if successful (a reboot will occur), otherwise ``False``

    CLI Example:

    .. code-block:: bash

        salt '*' system.reboot 5
        salt '*' system.reboot 5 True

    Invoking this function from a final housekeeping state:

    .. code-block:: yaml

        final_housekeeping:
           module.run:
              - name: system.reboot
              - only_on_pending_reboot: True
              - order: last
    '''
    ret = shutdown(timeout=timeout, reboot=True, in_seconds=in_seconds,
                   only_on_pending_reboot=only_on_pending_reboot)

    if wait_for_reboot:
        seconds = _convert_minutes_seconds(timeout, in_seconds)
        time.sleep(seconds + 30)

    return ret