Apologizing

I'm so sorry to hear about the .......................... you've been having.

We .............. for any inconvenience caused.

I'm afraid there has been a ........................

We ............... to inform you that the flight will be delayed by 30 minutes.

Please, accept our ............ apologies for the delay.

I'm sorry for what I said yesterday. I didn't mean to ............ you.

I'm so sorry to ........... about the problems you've been having.

We apologize for any .................. caused.

I'm .............. there has been a misunderstanding.

We regret to ................... you that the flight will be delayed by 30 minutes.