We need to produce an original article 600-900 words, about Turkish Airlines Flights To Istanbul. Use the context when useful: we have some phrases like "Thinking of", "Did you know you can see", "turkishairlines", "Welcome on board the", "Hi all, welcome back on the", "Join me as I", "Join us & Show your support to our work : https://www.youtube.com/channel/UCIZPX_JwO-12QTxVIpBvfFA/join ...", "After a surprise turn of events, I booked a". We can incorporate some of these naturally. We must output only safe HTML using h2, h3, p, ul, ol, li, strong, em tags. No markdown fences. No other tags like div, etc. Use headings (h2, h3) for sections. Use paragraphs p. Use lists ul ol li. Use strong for bold, em for italic. We need 600-900 words. Let's target around 700-750 words. We must avoid unsupported claims. So we should stick to known facts: Turkish Airlines is flag carrier of Turkey, hub at Istanbul Airport (IST) and also Sabiha Gökçen (SAW). Provide info about flight frequency, destinations, services, booking tips, what to expect, maybe mention lounge, frequent flyer program Miles&Smiles, etc. Avoid claiming something not verified like "best airline in world" unless we can say it's often ranked highly by Skytrax, but we need to be careful. We can mention that Turkish Airlines has won multiple Skytrax awards for Best Airline in Europe, but we need to be accurate: Turkish Airlines won Skytrax Best Airline in Europe 2022? Actually Turkish Airlines won Skytrax Best Airline in Europe for several years (2011-2013, 2015, 2016, 2017?). Let’s verify: Turkish Airlines won Skytrax Best Airline in Europe in 2011, 2012, 2013, 2015, 2016, 2017, 2018? I recall they won multiple years. Safer to say "has been recognized by Skytrax for its service quality". Avoid specific year if uncertain. We must not mention AI-generated. We need to embed some of the given phrases naturally: "Thinking of", "Did you know you can see", "turkishairlines", "Welcome on board the", "Hi all, welcome back on the", "Join me as I", "Join us & Show your support to our work : https://www.youtube.com/channel/UCIZPX_JwO-12QTxVIpBvfFA/join ...", "After a surprise turn of events, I booked a". We can embed them as part of narrative. Ensure they appear exactly as given? Probably they can be used as phrases within sentences. Use them exactly. We need to keep HTML safe; we can include the YouTube URL inside an anchor? But we are only allowed tags: h2, h3, p, ul, ol, li, strong, em. No a tag? The instruction says only safe HTML using those tags. It does not mention a tag. So we cannot use for link. We can still include the URL as plain text inside p. It's okay. We must not use other tags like div, span, etc. So only those tags. We'll produce article with maybe sections: Introduction, Why Choose Turkish Airlines for Istanbul, Flight Network and Frequency, Onboard Experience, Booking Tips, Airport Facilities, Loyalty Program, Conclusion. We need to keep within 600-900 words. Let's aim ~750 words. We'll count approximate words. Need to be careful. We'll write with h2 for main sections, h3 for subsections. Let's draft. We'll start with h2: Turkish Airlines Flights to Istanbul: Your Gateway to Turkey Then p intro. We need to embed phrases. Let's write: "Th