Which situation$($s$)$ will not result in a performance obligation per ASC $606?1.$ Northeast Airline provides one free round$-$trip flight for every eight round trip flights.

$2.$ Wealth Bank provides $1\mathrm{.}5\%$ cash back on its Visa credit card.

$3.$ Sovereign Bank promises a $$200$ cash rewards bonus when customers use its credit card and spend $$1,000$ in the first three months$\mathrm{.}4.$ A hotel provides a one$-$night$-$free voucher to customers who don't get a room that they reserved on an overbooked night.