Suppose I want to withdraw money from a card through a cashier in a bank via cash advance and to deposit the money to another card. What's the most natural way to ask for this? I think "can I withdraw $800 from this card via cash advance and deposit it to this card?" sounds unnatural.
I want a cash advance of $800 on card X, and then to deposit the money to card Y.
X and Y should identify the specific cards, perhaps by brand, or last-4-digits.
The "via" can be omitted, and so can "withdraw", as a cash advance is assumed to be withdrawn unless one specifically mentions repaying it or making a payment or deposit. (Unless it is to a debit card or a secured credit card -- a card backed by a savings account-- one usually speaks of a payment, not a deposit.)
I'd say: I'd like to take out a cash advance of $800 from my card xxxx (take out an $800 cash advance on my card xxxx) and deposit that money to my card yyyy.