YOU SAID:

Keep calm and have cool head

INTO JAPANESE

冷静、クールな頭を持っています。

BACK INTO ENGLISH

Has a calm and cool heads.

INTO JAPANESE

落ち着いた雰囲気のクールな頭を持ってください。

BACK INTO ENGLISH

Please have a cool head warm and friendly atmosphere.

INTO JAPANESE

くださいクールな頭温かくフレンドリーな雰囲気があります。

BACK INTO ENGLISH

Please have a cool head warm and friendly atmosphere.