"Clearly," he said, "once you tell me where we're going, I see no point in continuing to guess." His tone was almost too serious, but he hardly joked around enough with Hestia (though he did manage a smile at the comment—Hestia walked right into that one). They were still figuring one another out for the most part even if they had spent seven years together in school.
"We can't apparate, so unless there's a carriage waiting to take us to Hogsmeade or if we're going to ride on a broom somewhere..." Charlie folded his arms over his chest. It was not as though they had a lot of options, and they certainly were not heading towards one of the few floo fireplaces in the castle, so Hestia had something on her mind. Unfortunately, Charlie was hardly one to think creatively or romantically, which was likely another reason he struggled with personal relationships—but Hestia had an ultimate plan for them. She can't possibly be taking me back to Romania. I think that would be far too excessive just for lunch.
"Seriously," he said, stepping out of a student's way, "where are we going?"