The phrase "a pair of customers" is correct and usable in written English.
You can use it when referring to two customers together, often in a context where their joint presence or actions are relevant.
Example: "The store offered a special discount for a pair of customers who made a purchase together."
Alternatives: "two customers" or "a couple of customers".
A pair of customers were discussing the hottest demo recording circulating around town, by a band called the Apparat Organ Quartet.
When two armed men tried to knock over a barbershop, a pair of customers pulled out their concealed weapons and opened fire, killing one suspect and sending the other one scrambling.
"People ask me, and I'll tell them," he said during an interview at the Jazz Record Mart, where he cordially provided advice to a pair of customers vacationing from France who had learned there of his store.
When two armed men tried to knock over a barbershop, a pair of customers pulled out their weapons and opened fire, killing one and sending the other one scrambling.
How's the family?" He once introduced me to a pair of customers, a local school-board official and a construction worker, by saying, "This is Rach, my nerd".
Kozak tells us a pair of exuberant customers once went home with about 35 custom colors in one visit.
In fact, for a firm to price discriminate via a variety in the product line, this separation of parts worth between any pair of customer segments must be more than the separation in their inclinations.
It depicts a pair of ladies soliciting customers along a busy Berlin avenue.
For instance, Yahoo merchants can now automatically offer a shirt to match a pair of slacks a customer bought previously, or a tablecloth to complement silverware a customer placed into the shopping cart.
Mali, though, have shown great resolve in seeing off Guinea and holding off Gabon before finding a late equaliser – apparently drawing strength from the rumpled and phlegmatic figure of Giresse, who regards the pitch from the touchline with the weary resignation of a restaurateur surveying his last pair of customers after a long night.
Then an algorithm will pick out a pair of pants in the customer's size from a specific brand, taking the customer's preferences into account, such as whether he has previously rejected jeans or indicated that he likes chinos.
