Instruction :
Give me a list of the best places in the United States to go skiing

Response:
The "best" place to go skiing is very subjective based on location, skiing ability, and preferred terrain.  Generally speaking, Killington in the east, Winter Park, Big Sky, and Park City in the midwest, and Pallisades in Lake Tahoe have the best combinations of accessibility, trails for all abilities, and a large variety of terrain.