I came across the phrase, “Can I persuade you?” in the following sentence of Jeffery Archer’s popular novel, “Kane & Abel” in the scene a Harvard graduate, ex-marine Bostonian, Henry Osborn invites the young widow of Boston millionaire, Anne Kane to concert:
" She is delighted, though not entirely surprised, when he telephoned her the following morning. ‘Boston Symphony Orchestra, Mozart, conducted by their flamboyant new maestro, next Monday – Can I persuade you?’”
Is “Can I persuade you” a common or well-used word for asking someone for the consent or positive answer, or just an ad hoc expression invented for this occasion?
Can I say “Could I persuade you?” instead of asking somebody “Do you agree with me?” after haranguing him?