Thank you for contacting [Name der Einrichtung/Abteilung/des Fachbereichs/Büros] at Universität Hamburg. At the moment, I am not available to take your call. Leave your name and number, and I will get back to you as soon as possible. Thank you!
Thank you for contacting [Name der Einrichtung/Abteilung/des Fachbereichs/Büros] at Universität Hamburg. I will be out of the office until [Datum]. Leave your name and number, and I will get back to you when I return. If the matter is urgent, contact [Vertretung und Kontaktinfos]. Thank you!