VLOOKUP for leadtime variable

good day to all -
need help with a VLOOKUP (I think!) to accomplish the following:

4/24/2020 ship to customer (cell A2)
3/10/2020 ETA FABRIC (cell A3)

i have several mills with varying lead times so i wanted to be able to take the below values and have the date returned in cell A4 with the date that captures the leadtime per mill accordingly: cells D4:F4

MILL LEADTIME xmill
BW 50 1/20/2020
BP 82 12/19/2019
FE 60 1/10/2020

can someone walk me thru how to write the formula pls?
thanks...in advance!

re-posting with attachment.

Originally Posted by Pepe Le Mokko

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Thanks

thanks for the direction...i have updated my profile to show i am using Excel 2013.