The best way to learn proper English is to read news report, and watch news on TV. Watching TV shows is a great way to learn casual English, slang words, understand culture reference and humor. If you have already watched these shows then you may recall the words used in the following dialogs.

I'm going to get back.
Thank you for staying up.
The Big Bang Theory Season 10, Episode 11

- Nice flowers.
- Thank you. They're for a girl.
The Big Bang Theory Season 8, Episode 7

Hey, THANK you guys again
The Big Bang Theory Season 12, Episode 7

We really do want
to THANK you.
Breaking Bad Season 2, Episode 10