[2026] PTE Academic Speaking - Respond to a Situation

You were supposed to meet with your academic advisor to discuss your final semester course selection, but you have been called into a last-minute work meeting that you cannot skip. You need to call the advisor's office to apologize, explain that an unavoidable work conflict has arisen, and ask if you can reschedule the meeting for later in the week. What do you say to the administrative assistant?