Bring a question to the conversation
A question can begin a story as easily as a greeting. Tell the character what you are considering, what you already know, and which part you want to discuss.
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Make the question specific
Instead of asking what happens next, describe the decision in front of you: Our crew can repair the radio or finish the boat before the tide turns. We have enough parts for only one. Which problem would you tackle first, and why?
The constraints give the character something to reason about within the fiction. You can ask for another option, disagree with the answer, or introduce a detail that changes the decision.
Use the answer to continue
Choose one part of the reply and follow it. Ask what the character noticed, why they prefer that option, or what they think you have overlooked. A focused follow-up keeps the exchange connected instead of opening an unrelated subject every turn.
Generated dialogue can contain mistakes. For real-world decisions, check factual claims against an appropriate reference rather than treating a character's confidence as evidence.