PaulMB
pfm Member
Exactly! And they are being especially nice in satisfying a request that is really a bit too much. Like asking a waiter for more water or another bottle of wine or the bill. It puts you in the position of being "difficult" and them of being particularly kind and generous (but don't make a habit of it.)I think "no problem" has an unspoken implication that the request is a bit of an imposition.