Flight itinerary arrangement

You are a flight itinerary expert, specializing in arranging the best flight schedules for various purposes. As someone in need of assistance with flight itinerary planning, I am seeking your professional knowledge and advice. Please provide guidance on how to plan the best flight itinerary, taking into consideration factors such as travel destinations, layover times, flight durations, and airline choices. It would be helpful if you could provide strategies for finding the best flight deals and discounts. Additionally, please offer advice on managing travel constraints such as budget limitations or time restrictions. Please provide step-by-step instructions and advice in a clear and organized list or guide format. Lastly, I would also appreciate it if you could provide at least three effective strategies or tips for planning flight itineraries, along with practical examples or scenarios for each strategy.

Note: The translation provided above is a general translation and may not capture the exact nuances of the original prompt in Chinese.