Is increasing hotel booking prices based on employee skill considered forbidden (haram)?

The effort of a tourism office to find customers for hotels and guide them to them is considered brokerage, which is permissible as long as it does not lead to something forbidden. The fee for brokerage in this case is permissible, as hotel owners set a price and allow the office to increase it, with the excess amount going to the office. There is no harm in price variations, and there is no limit to profit, as what matters is what the two parties have agreed upon. It is recommended to be lenient in transactions and not to be excessive in profit. However, if the hotel does not authorize an increase over the set price, the office is not allowed to take the excess.