I'm going to get some food.
Sorry, but I promised to meet someone.
Is that the time?
Is that James overthere?
Look, I have a meeting now.
But I'll come back when I've sent them. Catch you later.
I missed lunch because of a conference call. So see you later.
Excuse me, I really must go and speak to him.
But it ends at five, so perhaps we can continue our conversation then?
My parking ticket runs out in five minutes. Can we continue talking later?