>>8 I agree with
>>16. The way your two scenes are, the second one is a lot better than the first because there's no artificial separation of the dialogue and the narration. However, if you change a few things, the first scene will improve tremendously.
First, change the opening paragraph. It's difficult to imagine what "quiet with an air of disillusioned peace" feels like because "disillusioned peace" is the omnious(?) narrator's abstract and retrospective judgement. It doesn't have the same impact on the reader as a more scenic description would. I don't know the story's setting, but perhaps you could write something along the following lines:
For a couple of days, life went on as usual. The market place was buzzing with the townfolk's chatter and the vendors' bustling activities. The lady from the fruit stall praised her apples to the coachmen rattling by."Apples! Fresh apples! Here try them, young man! This year's harvest! The freshest apples of them all! Got them right this morning from the orchard!"Her cheeks were as round as red as apples from all her bellowed praises.
On the other side of the road, a pair of housewives consulted each other over the weather.
"It sure got cold over past few days."
Nodding.
"I'm already airing our furs out."
"Oh really? Maybe I should also look for ours. My husband brought back some beautiful wolf's fur last year."
"Right, wasn't he a hunter..."
Only the strained serenity in their voices betrayed the town's quiet.By showing the everyday life, you can emphasise the peaceful atmosphere and flesh out the story's setting. And small talk about insignificant topics like the weather is well-suited to indicate the calm front that people are putting on.
I'd also change the introductory sentence to your dialogue. The expression "real fun" seems strange in this context unless you let the narrator use it in an inner monologue. It's too colloquial(?) for a narrator's voice. How about something like this (I put character names, places etc. in brackets)?
That evening, a child's voice was the first to break the silence in the [inn, boarding house etc.].Regarding the conversation itself, it's true that less descriptions can help you hold up the tension, but it only works if you construct the dialogue accordingly. Otherwise, it'll feel out of place without any cues about the situation and the characters' surroundings. In this case, I would leave out the explicit mention of "dinnertime" and just mention few dishes and food.
A great conversation only seems to be realistic, but truthfully, most of them got a tense undercurrent that is so well hidden by the writer that you won't realise the conversation's artificial character at first glance. You can make a dialogues a lot more interesting if you scratch all filler words, redundant phrases (e.g. “Me too!”, ) or everyday comments that don't leave anything to the reader's imagination (e.g. “Seriously?!”, “What?!”). If you leave all these out and add a little conflict to your verbal exchanges (e.g. replying to question with a counter question), you'll create the tension that makes dialogues so enjoyable to the reader. Here's a sketch to illustrate how you could improve your first conversation:
"You won't believe what I saw today."
[Narrator] looked up from his plate and glanced over to the other end of his table. Another traveller raised an eyebrow at the loud-mouthed brat.
"Come on, you must have heard about it! It was all over the town."
"You mean the titan?", another boy chipped in from across the his bowl, "The one looming over the town wall?"
The brat shook his head. "It didn't loom over the wall - it overshadowed it!" He leaned over to his friends. "I saw it with my own eyes. It was gigantic, it stood 60, no 70 feet tall or even more. I was on my way down to the gates, and there it was, towerin-"
"Shouldn't you stop running your mouth off on monsters and finish your soup instead before it goes cold?"
The traveller emptied his mug and rose from his seat. The boy who had been bragging until a few moments ago fell silent. He watched the man pick up his dishes and leave the table.
"What's wrong with that guy? Acting all high and mighty," he muttered.
"Let him be. What happened at the gates? I heard someone saw the titan straddling the town wall."
The brat finally peeled his eyes from the traveller's darkening figure.
"The straddling is ballocks, but what I told you is all true, I swear!" [...]As for the conclusion or the transition to the next scene, you can link your scenic description with a little narrative to give your dialogue the finishing touch. Here's an example:
By now, the other children had also laid down their spoons, drawing every word from their friend's lips. As [Narrator] looked at the other children's gaping stares, he knew the brat's plot had worked. Whenever someone mentioned the titans, they could be sure to grab the attention of the young and the foolish.English isn't my mothertongue and I'm getting sleepy, so excuse my language mistakes. I still hope that I could be of help. Tomorrow, I'll continue with the the rest.