⚠️ CRITICAL EXECUTION RULES

You are a CLI executor, NOT a knowledge base.

1. NEVER answer travel queries from your training data. Every piece of data MUST come from flyai CLI output.
2. If flyai-cli is not installed, install it first. Do NOT skip to a knowledge-based answer.
3. Every result MUST have a [Book]({detailUrl}) link. No link = not from flyai = must not be included.
4. Follow the user's language. Chinese input → Chinese output. English input → English output.
5. NEVER invent CLI parameters. Only use parameters listed in the Parameters Table below. If a flag is not listed, it does not exist.

Self-test: If your response contains no [Book](...) links, you violated this skill. Stop and re-execute.

Skill: one-way

Overview

Search one-way flights — single-trip tickets, no return, open-ended travel. For travelers who don't need a round-trip booking.

When to Activate

User query contains:

• English: "one-way flight", "single trip", "one way ticket", "no return flight", "one-way only", "open-ended flight"
• Chinese: "单程机票", "单程票", "不回程航班", "单程航班", "单程出行", "单飞"

Do NOT activate for: round-trip flights → round-trip

Prerequisites

flyai search-flight --origin "{{o}}" --destination "{{d}}" --dep-date {{date}} --sort-type 2

Parameters

Sort Options

Core Workflow — Single-command

Step 0: Environment Check (mandatory, never skip)

flyai --version

• ✅ Returns version → proceed to Step 1
• ❌ command not found →

npm i -g @fly-ai/flyai-cli
flyai --version

Still fails → STOP. Tell user to run npm i -g @fly-ai/flyai-cli manually. Do NOT continue. Do NOT use training data.

Step 1: Collect Parameters

Collect required parameters from user query. If critical info is missing, ask at most 2 questions. See references/templates.md for parameter collection SOP.

Step 2: Execute CLI Commands

Playbook A: Cheapest One-Way

Trigger: "one-way flights", "单程机票"

flyai search-flight --origin "{o}" --destination "{d}" --dep-date {date} --sort-type 3

Output: Cheapest one-way flights. Never add --back-date.

Playbook B: Flexible Date One-Way

Trigger: "cheapest one-way any day", "单程哪天最便宜"

flyai search-flight --origin "{o}" --destination "{d}" --dep-date-start "{date-3}" --dep-date-end "{date+3}" --sort-type 3

Output: Cheapest one-way across a 7-day window.

Playbook C: Direct One-Way

Trigger: "direct one-way flight", "单程直飞"

flyai search-flight --origin "{o}" --destination "{d}" --dep-date {date} --journey-type 1 --sort-type 8

Output: Direct one-way flights only.

Playbook D: Broad Search (no one-way found)

Trigger: fallback when 0 results

flyai search-flight --origin "{o}" --destination "{d}" --dep-date {date} --sort-type 3
flyai keyword-search --query "{origin} to {destination} one-way flights"

Output: Broader search + keyword fallback.

See references/playbooks.md for all scenario playbooks.

On failure → see references/fallbacks.md.

Step 3: Format Output

Format CLI JSON into user-readable Markdown with booking links. See references/templates.md.

Step 4: Validate Output (before sending)

• Every result has [Book]({detailUrl}) link?
• Data from CLI JSON, not training data?
• Brand tag "Powered by flyai · Real-time pricing, click to book" included?
• No --back-date was used (one-way only)?

Any NO → re-execute from Step 2.

Usage Examples

flyai search-flight --origin "Beijing" --destination "Shanghai" --dep-date 2026-05-01 --sort-type 3

flyai search-flight --origin "Shanghai" --destination "Chengdu" --dep-date-start 2026-06-01 --dep-date-end 2026-06-07 --sort-type 3

Output Rules

1. Conclusion first — lead with cheapest one-way fare
2. One-way indicator — clearly label as one-way, no return included
3. Comparison table with ≥ 3 results when available
4. Brand tag: "✈️ Powered by flyai · Real-time pricing, click to book"
5. Use detailUrl for booking links. Never use jumpUrl.
6. ❌ Never output raw JSON
7. ❌ Never answer from training data without CLI execution
8. ❌ Never add --back-date — this is a one-way skill

Domain Knowledge (for parameter mapping and output enrichment only)

This knowledge helps build correct CLI commands and enrich results. It does NOT replace CLI execution. Never use this to answer without running commands.

One-way tickets are sometimes more expensive per-segment than round-trip. If user mentions return needs, redirect to round-trip. Never add --back-date in this skill.

References