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Jyutping ciu1 maai6
Pinyin chāo mài

Definitions (粵典–words.hk)
  1. 動詞
    賣​出超​過供​應​量​嘅​服​務​或者​商品
    overselling; overbooking
    • 班機可能超賣咗,記得早啲登機,如果唔係會冇位。
      班机可能超卖咗,记得早啲登机,如果唔系会冇位。
      baan1 gei1 ho2 nang4 ciu1 maai6 zo2, gei3 dak1 zou2 di1 dang1 gei1, jyu4 gwo2 m4 hai6 wui5 mou5 wai2.
      This could be an overbooked flight. Remember to check in earlier or you may not have a seat.
Definitions (Wiktionary)
  1. verb
    to oversell; to overbook

超賣 [-卖]

Jyutping
Pinyin chāo mài

Definitions (CC-CEDICT)
  1. to overbook (e.g. airline seats)
  2. to oversell
Examples (粵典–words.hk)
  1. Cantonese
    班机可能超卖咗,记得早啲登机,如果唔系会冇位。
    班機可能超賣咗,記得早啲登機,如果唔係會冇位。
    baan1 gei1 ho2 nang4 ciu1 maai6 zo2, gei3 dak1 zou2 di1 dang1 gei1, jyu4 gwo2 m4 hai6 wui5 mou5 wai2.
    • This could be an overbooked flight. Remember to check in earlier or you may not have a seat.