I would like to buy 1 day river crouse from Chongqing to Yichang or another for Three Gorges ?

There is no one day cruise to Yichang. The cruise on Yangtze River passing the Three Gorges usually takes 3-4 days. The website you are visiting right now offers such trips. You can consult by emailing at traveltravelchinaguide.com

If your time is really limited, I recommend the Small Three Gorges trip to you. One day is generally enough for that. You shall take the cruise in Wushan County.