I wish to book 3 tickets on 23 or 24 september 2018 from guilin to yangshuo IN CRUISE??

Dear sir/madam,
I wish to book the cruise in one of the days 23 or 24 of September 2018. we need 3 tickets. i wanted to know some details of the PRICE. how much does it will cost for 3 people??

AND, HOW CAN I BOOK THE TICKET FOR 3 PEOPLES THROUGH ONLINE??
Please advise exact date, price and timetable.
Best Regards,
MUHAIMIN