As a condition, we should require them to participate in a special program: Any customer who patronizes two of the businesses will receive a substantial discountat the third.
Don't lie in front of them, to them or on their behalf (even if, for example, lying about their age gets them a discountat an amusement park or movie).
"We were supporting different experiments, including a feature where people in the building could sign up to get a discountat a burger place on the first floor," Barris explains.