It would seem to me that directing someone to anothers wishlist/havelist would be appropriate. Or if you saw on someones signature line that they have or need something. But if Mary came in and said i have these coupons do you need any... and she leave and suzie comes in.... I would NOT say ... Oh hey Mary has these coupons... unless of course you asked Mary for her permission to let others know of her offering...

Do I make any sence??? This is just my interpretation here... but I am sure someone will let you know how it works.