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From pages to conversations: designing for AI chat and assistants

The page is no longer the only place a product lives. More and more, people meet a brand through a conversation — and every sentence the assistant says is a design decision.

Priya Nair
Priya Nair
Head of Product Design, CodexLab
6 min read
A conversational AI assistant interface responding to a user request

The page is no longer the only place a product lives. More and more, people meet a brand through a conversation — with a chatbot, an assistant, or an agent acting on their behalf.

Today’s assistants aren’t the scripted bots of a few years ago. They’re proactive, conversational, and increasingly agentic — capable of handling multi-step tasks and anticipating what a user needs next. Figma’s research shows the share of teams building agents has jumped sharply year over year. Designing for that surface is now part of the job.

Designing language and behaviour

When the interface is a conversation, tone is UI. The assistant’s voice, its defaults, how it asks for clarification, and how gracefully it fails are all design decisions. A confident wrong answer is worse than an honest “I’m not sure — here’s what I can do.” We design those moments deliberately, the way we’d design an error state.

A mobile flow replacing a long form with a guided conversation
Forms dissolve into dialogue — ask for what you need, when you need it, and adapt to each answer.

Forms are dissolving into dialogue. Instead of a wall of fields, smart flows now ask for what they need, when they need it, and adapt follow-up questions based on each answer. The challenge shifts from laying out inputs to choreographing a conversation that respects the user’s time.

Trust is the real feature

An assistant that takes actions on someone’s behalf only works if the person trusts it. That trust is built through transparency: showing what the agent is about to do, making it easy to undo, and never hiding consequence behind confident phrasing. Designing for AI is, in large part, designing for legibility and control.

An assistant previewing the action it is about to take, with an undo option
Show what the agent will do, make it easy to undo, and keep the brand’s voice consistent throughout.

The brand still has to come through. An assistant is a representative of the company, and it should sound like one — consistent in voice, values, and judgment, whether it’s answering a question or completing a purchase.

When the interface talks back, every sentence is a design decision.

Starting small

You don’t have to rebuild your product around a chat box. Pick one task where a conversation genuinely beats a form — support triage, complex configuration, guided onboarding — and design it end to end: the voice, the defaults, the failure modes, and the handoff back to a human. Get one conversation right before you scale it.

Pages aren’t going away. But the brands that design their conversations as carefully as their screens will own the surface where more and more decisions get made.

Priya Nair
Priya Nair
Head of Product Design, CodexLab

Priya focuses on product surfaces, interaction patterns, and the messy middle between research and release.

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