I’m sorry

1 used when you are apologizing for something

I'm sorry, I forgot.

Oh, I'm sorry. Have I taken the one you wanted?

I'm sorry. I can't make it tomorrow.

I'm sorry to interrupt but there's an urgent call for you.

I am sorry to disappoint you.

I'm awfully sorry Jane can't come with us.

I'm sorry about the noise.

I'm terribly sorry. I didn't catch your name.

2 used for disagreeing with somebody or politely saying ‘no’

I'm sorry, I don't agree.

I'm sorry, I'd rather you didn't go.

3 used for introducing bad news

I'm sorry to have to tell you you've failed.