Cabin: AI Group Travel Agent with USDC Payments

// Escrow contract for group bookings
contract CabinEscrow {
    struct GroupBooking {
        address organizer;
        uint256 totalAmount;
        uint256 participantCount;
        mapping(address => bool) paid;
        bool executed;
    }
    
    function submitPayment(bytes32 bookingId) external {
        GroupBooking storage booking = bookings[bookingId];
        require(!booking.paid[msg.sender], "Already paid");
        
        USDC.transferFrom(
            msg.sender, 
            address(this), 
            booking.totalAmount / booking.participantCount
        );
        
        booking.paid[msg.sender] = true;
        
        if (allPaid(bookingId)) {
            executeBooking(bookingId);
        }
    }
}

function optimizeGroupFlights(preferences) {
  // Weight factors for group decision making
  const factors = {
    price: 0.4,        // 40% - most important for groups
    timing: 0.3,       // 30% - coordination matters
    convenience: 0.2,  // 20% - airports, connections
    flexibility: 0.1   // 10% - change fees, cancellation
  };
  
  // Find pareto-optimal solutions
  const candidates = searchFlights(preferences);
  const scored = candidates.map(flight => ({
    ...flight,
    score: calculateGroupScore(flight, factors, preferences)
  }));
  
  // Present top 3 options with trade-off explanations
  return ranked.slice(0, 3).map(addExplanation);
}