Suggestion for improved range form control

I have been playing with the range form control and would like to suggest an 
improvement to it or a complementary form control.

What I have in mind would be like a range form control but with two 
interactive indicators - one to correspond to the minimum allowed/chosen 
value and the other to the maximum allowed/chosen value.

I can think of several scenarios where this type of functionality might be 
useful. For example:
1. Hotel booking - enter the start date (on a calendar?) corresponding to the 
minimum chosen value and the end (of stay) date corresponding to a maximum 
chosen value
2. A delivery of goods scenario. A minimum time of 07:00 (say) and a maximum 
time of 21:00 (say) might be offered for delivery. The purchaser of goods 
could indicate the time window within the seller-specified range when 
delivery might suit them. In this case specifying a time might involve 
dragging two sliders on a scale.

I am sure there must be other use cases but these should be sufficient for 
others to get some feel for what I am suggesting so they can ponder whether 
there is any value in the suggestion.

Andrew Watt