Okay so this is how I imagine this conversation went:

Wal-Mart Employee:?’Hello ‘dis Wal-Mart’s, how can I help you?’

Customer: ‘Yes, I would like to order a cake for a going away party this week.’

Wal-Mart Employee:?’Whachu want on da cake?’

Customer: ‘Best Wishes Suzanne.’   And underneath that, . ..   ‘We will miss you’.