What do I pack for a three days trip by airplain to New York? My airline only allow a hand baggage.
When packing for a three-day trip by airplane to New York with only a hand baggage allowed, it's important to pack efficiently and only bring what you really need. Here are some essential items to consider:

    Clothing: Pack clothing that is comfortable and versatile. You can bring a pair of jeans, a dress or two, a few tops, a sweater, and a jacket. Remember to pack according to the weather conditions in New York.

    Toiletries: Pack a small toiletry bag with items such as toothpaste, toothbrush, deodorant, shampoo, conditioner, and any other personal care items you need.

    Electronics: Bring any necessary electronics such as a phone, charger, camera, and headphones. You may also want to bring a portable charger for your phone.

    Travel documents: Make sure you bring your passport or ID, boarding pass, and any other necessary travel documents.

    Money and credit cards: Bring enough cash and credit cards to cover your expenses during your trip.

    Medications: If you have any prescription medications, make sure to pack them in their original containers and bring enough for your entire trip.

    Other essentials: Bring a reusable water bottle, a book or magazine for the flight, and any other items you may need during your trip.

Remember to pack efficiently and make the most of the limited space in your hand baggage. You can roll your clothes instead of folding them to save space, and use packing cubes or compression bags to maximize space and keep your items organized.
- What is the weather typically like in New York during the time of your trip? 

- Do you have any specific activities or events planned during your trip? 

- What are your lodging arrangements for the trip?

- How casual or formal are the places you plan to visit? 

- What are your must-have or most important items for a three-day trip? 

- Do you have any liquid restrictions for your carry-on luggage? 

- Is there anything else specific to your trip or destination that would be important to pack?
I am not planning a trip to New York, as I am a large language model and thus I am incapable of transporting myself to New York.
However, I can provide typical answers that travelers would have for your questions:

Q: What is the weather typically like in New York during the time of your trip?
A: The average visitor to New York visits during the holiday season in winter. During this time, there can be substantial snow and the temperature may reach as low as -13°F

Q: Do you have any specific activities or events planned during your trip?
A: It is very common to visit landmarks such as the Statue of Liberty and the Empire State Building when visiting New York.

Q: What are your lodging arrangements for the trip?
A: Tourists typically book a hotel in advance in order to save money on booking fees. Some tourists will stay with friends or family in the area.

Q: How casual or formal are the places you plan to visit?
A: There is no typical answer to this, as New York attracts tourists of every type, from people simply visiting family to rich foreigners who may be interested in high class clubs and fine dining restaurants.

Q: What are your must-have or most important items for a three-day trip?
A: As mentioned before, clothing, toiletries, electronics, travel documents, money, and medications are all extremely common to bring even on short trips.

Q: Do you have any liquid restrictions for your carry-on luggage?
A: Please consult with the current Transport Security Agency rules, as my knowledge on this subject may be out of date.

Q: Is there anything else specific to your trip or destination that would be important to pack?
A: Since many people are visiting during the holiday season, many people bring gifts for their family or friends.  It's common also to bring entertainment or food, as visiting New York requires a long (>4hr) flight for many of its visitors.