you can simply ask if they are interested in one of your valentine's day bundles that includes delivery.
for the better part of a decade i spent every valentine's day standing at the entrance of a very busy flower shop, doing brief “exit interviews” with as many customers as possible.
of special interest were those leaving empty handed. we had them in the palm of our hand, right inside the shop, with time to buy a valentine's day gift running out… and we had blown it. we had missed our only chance to sell them valentine's day flowers that year. we needed to know why.
sometimes there was the usual grumbling about higher 