Calendar of Stock Availability

Help!

I am looking for a calender plugin for my opencart that displays a calender allowing the customer to book in slots to hire each product. In this case its a dress hire company. The user needs to be able to see if that dress is booked out in the week that they want it and to be able to request to book the free weeks. My customer is keen that this is integrated within her system however I can't seam to find something that exists.

Thank you in advance.