American Airlines offers multi-city itineraries that allow you to visit multiple destinations in a single trip. This option is ideal for travellers who want to experience more than one location on their trip, and it provides the flexibility to plan your own itinerary.

To book a multi-city itinerary with American Airlines, you can either:

1. Use the American Airlines website: Simply enter your travel dates and the cities you wish to visit. You can choose to fly into one city and out of another or make multiple stops along the way.
2. Contact American Airlines Reservations: You can call the American Airlines Reservations line and speak to an agent who will help you book your multi-city itinerary.

When booking a multi-city itinerary, keep in mind that you may have to pay additional fees and taxes, and your baggage allowances may be different for each segment of your trip.

Additionally, American Airlines offers the option to book American Airline multi-city itineraries with partner airlines. This allows you to travel to destinations not served by American Airlines and can be a convenient option for travelers who want to explore more remote or exotic destinations.