Hi there!  Whew!  That was a long wait to join the chat!  Can you please show me what the largest single payment amount is?
select amount from payment order by amount desc limit 1
Great!  Can you provide me with the associated customer ID and payment ID?
select amount,payment_id,customer_id from payment order by amount desc limit 1
Perfect!  Could you tell me which payment ID over $5.00 has the most recent payment date?
select payment_id from payment where amount>5 order by last_update desc limit 1