Excel update column in table

I am using a table in Excel and needs support on 2 questions.

Here are my 2 columns 'Date' and 'Status' with dropdown menus in a table 'Data'.

1. I want to update the 'Status' column to "Ended" when 'Date' has a value. When a value isn't set in 'Date' I want 'Status' to be "On-going".
2. I have a list with dates ...Today()-1, Today(), Today()+1... and so on. I show those in the dropdown menu. I want today's date to show as a string "Today", and I also want the Data Validation to allow older dates as input.