Thank you for your order. It will take some time to finish cooking. Thank you for your patience.
Depending on the difference in language ability, a detailed explanation could turn into a nightmare. Most people will accept a simple 'it will take some time to finish cooking' as an explanation. Or even 'it will take time to complete your order'. A simple answer that is preceded and followed by a 'thank you' will make things easier. Politeness is key. Adding 'for your patience' will preemptively prevent too many questions while reassuring them that you are doing your best to hurry. This is a stock answer for many individuals in the service field in America.
We prepare your meal after taking your order, so it may take time during busy hours.
- "We prepare your meal after taking your order, so it may take time during busy hours."
直訳すると「注文を受けた後に食事を準備するので、忙しい時間には時間がかかるかもしれません」という意味になります。
- "Our meals are made to order, so there might be a wait during peak times."
「私たちの食事は注文に応じて作られるので、ピーク時には待つことがあるかもしれません」という意味です。
役に立ちそうな単語とフレーズ
- prepare: 準備する、調理する
- order: 注文、注文する
- busy hours: 混雑時間帯
- take time: 時間がかかる
アメリカ合衆国 
