sorry
I'm sorry for missing your call.
apologize
I need to apologize to you.
my bad
Oops! I forgot to buy food. My bad!
sincerely
I sincerely apologize for breaking your phone.
I have to work overtime tonight.
All the guys will be disappointed.
Actually, something just came up. Could you tell the guys I won't be able to make it to this evening's get-together?
I hate to trouble you, but we're planning to have a weekend away. So could you take care of Fide for us?
Hey Bob. I have to take this call. Please let me know later there's anything I missed, OK?
By the way, it's my kids birthday. Would it be OK if I took a afternoon-off?
Actually, I just remembered I'd have a dentist appointment. Could you pick up the kids?
Sorry to trouble you, but it's a bit hot here. So could you open the window, please?
