To use Travel Planner, simply type in a message that describes your interests or preferences, and it will generate an itinerary for you. You can also provide additional information to refine the itinerary.
Travel Planner will consider your interests and preferences to create a personalized itinerary for you. It’s a great tool for planning your next trip!
ref : https://github.com/google/generative-ai-docs/tree/main/demos/palm/web/travel-planner