Sam smiled back, recognising the leading comment and knowing exactly what to say in response. Just as he opened his mouth to speak however, Mrs Ollivander continued, seeming to have realised for the first time that he hadn't yet finished his lunch. Really, the Seer didn't mind. During his time at Hogwarts he'd regularly spent his lunchtimes not visiting the Great Hall but instead eating a sandwich or even just drinking a cup of tea while he spoke with students in his office or classroom, and the habit remained. "It's not a problem, really Mrs Ollivander" he assured her, though he did stop shuffling the cards and instead laid the pack face down in the centre of the table "and my father always said you're only as old as you feel, and he's still quite young enough to be working almost every day as well."
Nonetheless, Sam was glad to take a few minutes to finish the food, glad that he'd picked a cold sandwich today. His coffee had been in a magically-insulated cup so while it had cooled a little, was in fact now the perfect drinking temperature. As the lady picked up a finger sandwich of her own he was already more than halfway through his food; his mind on the cards just as much as his lunch and the situation in which he had now found himself. He wasn't used to reading in quite such a public place and felt slightly nervous; on the other hand, his mind wasn't entirely focussed so it was unlikely he was going to accidentally have a vision in the middle of Diagon Alley.
Sandwich finished, he drained most of the coffee cup, leaving just a couple of inches of the dark liquid at the bottom. Then he lifted the cards once again and shuffled once more. A woman of uncertain age paused momentarily in the middle of the street and seemed as if she wanted to stand and watch, but them shook her head and went on her way with a slight smile, apparently realising that it wasn't polite to stare. Sam had already been pondering the type of reading he would use; there were some that used just three cards; others that used twenty one or even twenty four cards and just about everything in between. Those readings also took something like an hour or more to interpret correctly and he needed to be back at his father's shop before then.
So he laid out seven cards face down in a horseshoe shape, facing Mrs Ollivander. "Alright, so in order, these cards represent the past, the present, the immediate future, unexpected circumstances, people, obstacles, and outcome" he said, pointing to each card in sequence "...forgive me if you know all this already" he added, sounded a little anxious. It had suddenly occurred to Sam that he had no idea what Mrs Ollivander's educational background was; she could quite easily have a NEWT in the subject and simply be rusty in its practice. He smiled, hoping that he hadn't already morphed into teacher mode, and turned over the first card.
"Okay, so the King of Spades. This generally represents an ambitious or over domineering man, so..." he swallowed, and looked up at the older lady with an uncomfortable gaze. It was obvious who the card represented, and he suspected Mrs Ollivander would dislike hearing the name just as much as he would hate saying it. It did at least prove that the reading was likely to reveal something relevant, however. He turned the next card. "the two of clubs..." his smile widened and became genuine. "The card of the gossip. This one represents disappointment as well as idle talk, and as it's in the 'present' position, I guess we know what this one is saying..."
He turned the next card, the three of hearts. "Okay, so the near future is warning of caution and against saying anything that might cause regret later" he rested his fingers on the card as he spoke "which is likely to mean..." his voice trailed off, the final few words slowing and becoming indistinct. His eyes glazed over and he became very still, unresponsive for almost a full minute.