Question: Can you recommend a travel planning service that can generate a complete trip itinerary based on my preferences?

AiRial is an AI-powered travel planning service that builds entire trips, matching flights, hotels and day-by-day activities with your own preferences. It personalizes the results based on your preferences for food, activities and other aspects of the trip. You can describe your dream vacation, and AiRial will build a customized itinerary. The service can accept multimodal input from travel videos, social media and other sources.

Another good option is Guide, which uses AI to build a personalized travel itinerary in a few seconds. Guide has features like collaborative planning, integration with Expedia to book hotels, and an estimate of your budget by category. It taps into Lonely Planet and Google Reviews for high-quality recommendations, so it's good for all kinds of travelers.

RoutePerfect is another good option, using AI trained with GPT technology to build a personalized itinerary based on your preferences. It can book travel services, organize your trip and even offer a free GPS-based audio guide for one city. Its crowdsourced database means you get tried-and-tested itinerary recommendations.

For a more conversational experience, Vacay offers personalized travel planning with a chatbot for real-time recommendations and an interactive itinerary planner. It also offers curated local insights and destination guides so you can get a better sense of what's going on. The company prioritizes user privacy and offers flexible membership plans for different needs.