Help me to provide a letter warning of misappropriation in using company funds. See below the whole incident.
An incident concerning the unliquidated cash advance involves an employee who was tasked with purchasing showroom decorations and requested a cash advance worth $1000. When the supervisor learned that the employee would be out, the supervisor also requested a cash advance of $2300 for printing checklists as required by FGE, under his name and that of his supervisor. The employee requested the cash advance for the decoration on September 8 and the cash advance for the FGE requirement on September 9. On Saturday, he was absent without authorization and also on Monday, then returned to work on Tuesday, September 10. The supervisor attempted to contact the employee via phone call and text on the previous Saturday to follow up on the FGE requirement, but his number was unreachable. Later that day, Miss Charmaine also tried to contact him. Fortunately, he answered the call and informed Miss Charmaine that he couldn't purchase the decoration yet because he used the money to pay for his boarding house rent and promised to repay on payday. He was able to present the FGE requirement but is still waiting for the receipt.