There was a humorous article in the newspaper about how a person manages to secure table reservations at restaurants when the hostess has been telling other people that there will be nothing available for three weeks.
The gentleman in question says, “I want a reservation, please, for two people, tomorrow at 8.” (WSJ, 12/7/2011, Gardner). The speaker pointed out that normally you would say, “I would like.” His version, “I want,” is more forceful, maybe even rude, so he then tempers it with the “please.”