ER Schema - bank system

Hello i'm trying to model a simple banking scheme where I have 3 transactions: withdraw, transfer, deposit. of these 3 operations, the transfer is the only one that needs more attributes, I need to know the accounts participating in the transfer, and who received and who sent it. At first I thought of something simple like that, but it seems very strange: but this seems very vague to me, and when do I need the statement from the two accounts participating in the transfer? could someone help me with this?