お客様がくつろげるよう大いに努力しなければいけません。

We have to take great pains to make our guests feel comfortable.

お客様(きゃくさま)がくつろげるよう大(おお)いに努力(どりょく)しなければいけません。

Okyakusama ga kutsurogeru yō ōini doryokushinakerebaikemasen.

お客さま (おきゃくさま)

guest; visitor; customer

が (が)

indicates sentence subject (occasionally object); indicates possessive (esp. in literary expressions); but; however; still; and

寛げる (くつろげる)

to loose; to ease; to relax

様 (よう)

appearing ...; looking ...; way to ...; method of ...ing; form; style; design; like; similar to; thing (thought or spoken)

大いに (おおいに)

very; much; greatly; a lot of

努力 (どりょく)

great effort; exertion; endeavour; endeavor; effort

Readings: キャク、カク

Meanings: guest, visitor, customer, client

Readings: ヨウ、ショウ、さま、さん

Meanings: Esq., way, manner, situation, polite suffix

Readings: ダイ、タイ、おお-、おお.きい、 -おお.いに

Meanings: large, big

Readings: ド、つと.める

Meanings: toil, diligent, as much as possible

Readings: リョク、リキ、リイ、ちから

Meanings: power, strength, strong, strain, bear up, exert