Requires @argenos Natural Language Dates Plugin. Pop up input box asks for date and then parses it as a date and turns it into a [[Daily Notes Page]] page ref.

obsidian.templater.nlp-date-input.js

<%*
//v1.0

let dueDateStr = await tp.system.prompt("Due Date");
let parseResult;
let parseResultLink;
if(dueDateStr) {
    let nlDatesPlugin = this.app.plugins.getPlugin('nldates-obsidian');
    parseResult = nlDatesPlugin.parseDate(dueDateStr);
    if(parseResult){parseResultLink = '[' + '[' + parseResult.formattedString + ']]';}
}
tR = parseResultLink;
%>

Here is link to @argenos Natural Language Dates plugin which is required for this Templater script to run.

https://github.com/argenos/nldates-obsidian#natural-language-dates-in-obsidian

TIP: Copying and pasting into Obsidian as Plain Text seems to work best (ctrl/cmd + shift + v)

Thanks so much -- I've got a little templater snippet I use to convert a selected date into a link to that day's daily note, but I wanted to be able to use natural language processing instead of always having to format my input date very specifically. I had the Natural Language Dates plugin, but didn't know how to access it from my template. You provided the crucial last piece of the puzzle! :)