Check if full text field has a date in a range

Hello I am new to elastic world and I am trying to figure out how can I find if a field for example "text" (which represents the whole text indexed) has a date that is in a specific range ?

In doc_1 in field "text" we have "I was born on 27/05/1995" and I want to check if this document has a date inside it, which is between 20/05/1995 and 30/05/1995.

If this is not possible then how can I take this date "27/05/1995" and store it into a new field when I am indexing this doc ? And can you give me a tip about the best approach when we talk about indexing documents containing dates ?

Thank you

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