Action before merge with break flow

Question

I am trying to recreate this section of an acitivity diagram in PlantUML.

The best I managed is this:

repeat
    :Choose restaurant;
    if (is busy) is ([no]) then
        break
    else ([yes])
    endif
repeat while (wait) is ([no]) not ([yes])

But I cannot insert the wait action at the appropriate place. It is as if a forward keyword was missing.