To what degree does the American economic system allow the restaurant industry to provide what we need and want efficiently?

The airline’s use of demand pricing results in passengers paying different prices for essentially the same seat. What is the benefit of this practice to the airline and to the passengers? What is the drawback to the airline and the passengers? Do you think this practice should be continued? If not, what would be the best alternative?

According to the Hanson Production: Pricing for Opening Day Case Study by Peter Famiglietti,  Should the opening-day price be based on cost, demand/supply, the competition, or a profit target?

Which comes first in changing the food system: supply or demand? Provide your reasons   Note:- Do not provide handwritten solution. Maintain accuracy and quality in your answer. Take care of plagiarism. Answer completely. You will get up vote for sure.