Thank you.
You're welcome
Thank you truly.
Thank you.
That was a big help.
Excuse me / I'm sorry.
Excuse me, do you have a moment?
I'm sorry.
I am very sorry (formal).
Sorry I'm late.
It's my fault.
Please don't worry about it.
It's okay / I'm fine.
Excuse me (entering/leaving a room).
Excuse me for leaving before you.
Please (go ahead / take it).
Sorry to trouble you.
I'm sorry for the inconvenience.
No, not at all.
Thank you for going out of your way.
I appreciate it.
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