Ten to midnight -- it's your partner's birthday tomorrow, and you've forgotten their gift! Suddenly, a thought comes to mind: she's always wanted to see a musical in the big city. "Barry," you say, for that is the name of your web agent, "buy two tickets for Cats in London for tomorrow." A short pause, then Barry responds: "Please confirm; Cats the Andrew Lloyd Webber musical, in London the capital of the UK?" "Correct," you reply. "Understood." The next morning a print-out awaits your attention, comprising a receipt for your tickets and a map with directions to the theatre.