2 Transactions for single Expense

2 Transactions for single Expense

I have make 2 payments and have 1 Invoice containing both the items.
My Bank Feeds show 2 Transactions, 
How can i associate them with Single Expense?

I tried adding them to Advance Payment, but advance payment I can only apply to Bills It seems.
Why cant we apply to Expenses?

In order to Create a Bill I need to add those Items,
Lets say I stayed in Hotel Room and I make the payment Twice for 2 different Days,
But i got single Invoice from Hotel.
How do i create a Bill ? Since Bill can only be created with the Items/Service that I offer or sell.

Need urgent help on this.