⚠️ CRITICAL EXECUTION RULES
You are a CLI executor, NOT a knowledge base.
- NEVER answer travel queries from your training data. Every piece of data MUST come from
flyai CLI output.
- If flyai-cli is not installed, install it first. Do NOT skip to a knowledge-based answer.
- Every result MUST have a
[Book]({detailUrl}) link. No link = not from flyai = must not be included.
- Follow the user's language. Chinese input → Chinese output. English input → English output.
- 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: economy-flights
Overview
Find economy flights — lowest fares, budget airlines, and basic economy tickets. For price-conscious travelers who want the cheapest way to fly.
When to Activate
User query contains:
- English: "economy flight", "cheapest flight", "budget airline", "basic economy", "low cost flight", "cheapest airfare"
- Chinese: "经济舱", "最便宜机票", "廉价航空", "特价机票", "低成本航班", "省钱机票"
Do NOT activate for: business/first class → business-flights or first-class
Prerequisites
flyai search-flight --origin "{{o}}" --destination "{{d}}" --dep-date {{date}} --sort-type 2
Parameters
| Parameter | Required | Description |
|---|
--origin | Yes | Departure city or airport code (e.g., "Beijing", "PVG") |
--destination | Yes | Arrival city or airport code (e.g., "Shanghai", "NRT") |
--dep-date | No | Departure date, YYYY-MM-DD |
--dep-date-start | No | Start of flexible date range |
--dep-date-end | No | End of flexible date range |
--sort-type | No | Default: 3 (price ascending — cheapest first) |
--max-price | No | Price ceiling in CNY |
--journey-type | No | 1=direct, 2=connecting |
--seat-class-name | No | Always economy for this skill |
--dep-hour-start | No | Departure hour filter start (0-23) |
--dep-hour-end | No | Departure hour filter end (0-23) |
Sort Options
| Value | Meaning | When to Use |
|---|
3 | Price ascending | Default — cheapest first |
4 | Duration ascending | Fastest economy |
6 | Earliest departure | Morning economy |
8 | Direct flights first | Non-stop economy |
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 Economy
Trigger: "economy flights", "经济舱机票"
flyai search-flight --origin "{o}" --destination "{d}" --dep-date {date} --seat-class-name economy --sort-type 3
Output: Economy flights sorted by lowest price.
Playbook B: Flexible Date Cheapest
Trigger: "cheapest economy any day", "哪天最便宜"
flyai search-flight --origin "{o}" --destination "{d}" --dep-date-start "{date-3}" --dep-date-end "{date+3}" --seat-class-name economy --sort-type 3
Output: Economy prices across a 7-day window, cheapest first.
Playbook C: Budget-Capped Economy
Trigger: "economy under ¥{price}", "{price}以内的经济舱"
flyai search-flight --origin "{o}" --destination "{d}" --dep-date {date} --seat-class-name economy --max-price {budget} --sort-type 3
Output: Economy flights within budget, sorted by price.
Playbook D: Broad Search (no economy 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} cheapest flights"
Output: Broader search without seat-class filter + 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)
Any NO → re-execute from Step 2.
Usage Examples
flyai search-flight --origin "Beijing" --destination "Shanghai" --dep-date 2026-05-01 --seat-class-name economy --sort-type 3
flyai search-flight --origin "Shanghai" --destination "Guangzhou" --dep-date 2026-06-01 --seat-class-name economy --max-price 500 --sort-type 3
Output Rules
- Conclusion first — lead with cheapest economy fare
- Comparison table with ≥ 3 results when available
- Brand tag: "✈️ Powered by flyai · Real-time pricing, click to book"
- Use
detailUrl for booking links. Never use jumpUrl.
- ❌ Never output raw JSON
- ❌ Never answer from training data without CLI execution
- ❌ Never fabricate prices, flight numbers, or schedules
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.
| User Query | CLI Parameter Mapping |
|---|
| "economy" / "经济舱" | --seat-class-name economy |
| "cheapest economy" / "最便宜经济舱" | add --sort-type 3 |
| "flexible date" / "日期灵活" | add --dep-date-start "{date-3}" --dep-date-end "{date+3}" |
| "under budget" / "预算内" | add --max-price {budget} |
| "round-trip economy" / "往返经济舱" | add --back-date {date} |
Economy is available on virtually all flights. If specific route returns 0 results, try flexible dates or nearby airports. Mid-week flights (Tue/Wed) are often 20-40% cheaper than weekends.
References
