Issue with data format when converting a csv file to excel file

Hi all, I have written a process to convert “.csv” file to “.xls” file. After process execution completes, a new .xls file gets created. Now I am facing an issue with data formating. if .csv file contains date “5/28/2020” in this format, .xls file which is created from this .csv file contain date in “5/28/20” this format. I want new xls file to contain date in same format as it was in .csv file.