Kotoshi-mo yoroshiku onegai-itashimasu. (I hope to continue our good relationship in the new year.)
Situation 1: It's the first day back at the office in the new year. Mr. Tian and his client, Mr. Suzuki, exchange greetings.
鈴木： あけましておめでとうございます。今年もよろしくお願い致します。