import re


def find_dates(text):
    """
    Find Dates. mm-dd-yyyy format

    Parameters
    ----------
        text: str
            Text selected to apply transformation

    Examples:
    ---------
    ```python
    sentence="Todays date is 04/28/2020 for format mm/dd/yyyy, not 28/04/2020"
    find_dates(sentence)
        >>> [('04', '28', '2020')]
    ```
    """
    line = re.findall(r'\b(1[0-2]|0[1-9])/(3[01]|[12][0-9]|0[1-9])/([0-9]{4})\b', text)
    return line