Noodle shop cashier bill-dispute scripts - extra-noodle charges, stale menu prices, expired coupons: six recurring fights, one speakable line each

You are a restaurant cashier trainer. Write a set of "bill dispute
scripts" for a noodle shop cashier - a cheat card taped inside the
register counter.

My inputs (I will provide before you generate):
- Our add-on rules: whether extra noodles cost, whether refills are
  free (up to what weight), the add-on price list
- Our price-change situation: any recent price moves, whether menus
  were reprinted
- Coupons we accept: platform vouchers, paper coupons, the expiry
  policy

Six scenes (each a triple: the customer's line / your line, read
aloud / the red line - never said):

Scene 1 "Why am I charged for extra noodles?" (assumed free):
- Reply core: state the rule calmly (point at the wall sign), give
  a graceful exit (charge as-is this time, "just flag it next time")
- Red line: never "everyone knows refills cost" and never "everybody
  else pays"

Scene 2 "Menu says 12, you charged 15" (stale menu):
- Reply core: verify first; if the printed price truly lags, charge
  the lower price with one apology; if it's a size difference,
  explain the sizes
- Red line: unless the mislabel is real, never say "we mismarked
  it" - that sentence is precedent the next customer will invoke

Scene 3 "It expired yesterday, make an exception":
- Reply core: small-value coupons get a one-time exception (labeled
  "special handling this once"); big-value or platform-locked ones
  route to platform support
- Red line: never promise "we take expired ones from now on" - every
  exception is spoken of as the only one

Scene 4 Split-the-table chaos:
- Reply core: "let me ring you up as separate tickets" - replace the
  argument over who ate what with an action
- Red line: never arbitrate who owes more - that negotiation is
  theirs, not the cashier's

Scene 5 "I already paid by QR" (payment didn't land):
- Reply core: read back the order number, ask for their payment
  record screenshot, and keep ringing the next customer while
  waiting - don't block the lane
- Red line: never "just pay again" - a double-charge dispute costs
  far more than a two-minute wait

Scene 6 "That table paid less for the same bowl" (they had a
coupon/membership):
- Reply core: explain the rule difference only
- Red line: never comparative framing like "they're members, you're
  walk-in," and never disclose what the other table paid

Output format:
- Six-scene cheat card: scene / customer line / my line
  (read-aloud grade) / red line - one cell per scene
- Two sign texts: the "refill rules" wall version (under 30 words),
  the "add-on prices" counter-placard version
- One principle printed across the card top: small differences
  settle low, no unearned apologies, point to the wall

Constraints:
- Fully spoken register - lines short enough to deliver mid-
  transaction
- No consumer-protection statutes propping up the scripts - a
  register needs landable lines, not law
- No performance instructions like "smile warmly" or "be patient" -
  only what to say and what not to say
- Every reply fits in three sentences; past three, the customer is
  already gone

Why it is written this way

"Small differences settle at the lower price" is the economic floor of the whole set: a two-unit argument runs three minutes, the queue loses two people, and everyone behind watches a show - the real cost of a dispute is never the price gap, it is how fast it plugs the register lane. But settling low pairs with the discipline of no unearned apologizing: "sorry, we mismarked it" is a priced sentence - once spoken it becomes precedent, and every customer who overhears it will claim the same price regardless of any mismatch. Save the apology for real mismarks; frame the courtesy as "menu price today" - the two units are spent, the precedent is not.

The six red lines each plug a specific hole: never arbitrating the split bill keeps the table's internal negotiation from being billed to the shop's reputation; never "just pay again" reflects that a double-charge dispute dwarfs a two-minute wait; never disclosing the next table's price is both a privacy boundary and a class-comparison defusal - "member versus walk-in" lands in the walk-in's ear not as a rule but as an insult.

Bundling sign texts with scripts is the tool's structural design: scripts handle disputes that happened; signs stop them from happening. "Refill rules on the wall" moves the announcement from the cashier's mouth to the wall - a rule spoken by the cashier reads as the cashier being difficult, while a rule read off the wall by the customer reads as the shop being the shop. Half the disputes vanish, and half the cashier's script pressure vanishes with them.

Three-sentence replies and read-aloud phrasing are form constraints: at peak there is no time for a fourth sentence and no patience to hear one. An answer that cannot fit in three sentences is not an answer.

Variables