Fill in missing data from date series in Excel

I have a set of data that looks like this when imported:

I would like two transformations:

1. Missing dates filled in to ensure all dates between the start and end dates are accounted for. Note the gap between 3/5 and 3/8 as well as 3/9 also being missing)
2. The price should be set to the value of the last known price. Ex. the price from 3/5 to 3/7 would be $2,000 until 3/8 when it changes to 3,000

Final result should look like this:

What is the easiest way of accomplishing this? Is there a "native" way? Or will I have to use formulas?