Classicly

Finding she is not thus circumstanced, you call her by name, and say, “Would it be agreeable to you for us to cultivate a more intimate acquaintance?” You need not say it in a tone as serious as if you were going to a funeral; but in a light, easy, peaceful way, as though half in fun. You must not feel disappointed if she tells you such words as, “Well, we will see about it,” or “Some other time we will talk it over.” Something in this style will not be out of place, for she may not be expecting anything of the kind and does not wish to give too prompt an answer. If on any certain occasion you ask a lady for her company, and she should say that she is engaged, do not think anything strange of it, for such may be the case; and you must never let a lady see that you feel disappointed at any time about such matters.