I would recommend finding out her interests. Be polite and make casual , non controversial small talk. Listen and remember to everything she says and say very little yourself. If there is a mutual social occasion with a group of other people , see if she is interested and response . Carry on from there . Chocolate, flowers, fine wine, chick flick movies or theatre plays are good etc.
It's not to difficult getting a date with an old single from the 70's. Most are grateful for any attention at all.