It will still be colder in the east. Cold spring. So what you definitely need is a down or thick jacket, inside a normal fall dress is enough. But indoors is mostly heated, so don't worry about freezing.

West, the day is very warm, but the night is very cold. There is a big difference between morning and evening temperatures in the west. So for both the east and the west, you should pack your normal fall clothes and a jacket that you can take with you.

Traveling east and west for two weeks? That's not a week in the east and a week in the west? What a rush of time. You can sign up with a travel agent, depending on which one you like to go to. The travel agents I've been to are Fly Wherever Travel, Vertical, and Pegasus. I've been to travel agencies such as Fly Away Travel, Cross Country, and Pegasus. All three of them are good when I put them together. In addition, the travel agency in the United States are not included meals.