But 2 ticket in 2 different date

Hello, I need to sell tickets for the seats to be assigned to 2 days of the fair. Each exhibitor will be able to buy a ticket on day 1 or day 2 and so far it works. However, I need to be able to buy tickets for both day 1 and day 2 with which I can issue a discount coupon. Except that the system resets my cart every time I change the date table. How is it possible? what am I doing wrong? the message of error is: "When switching to other date current reservations are removed. Confirm?"is not a problem of woocommerce, but is the plugin the not avilabe for two different days.