Manners

Onegaishimasu - Please (I'll ask you to do me an honorable favor)

Mo ichido onegaishimasu—one more time, please.

Hontou desu ka. Jaa, onegaishimasu - Really? Then, please do that

Kudasai - Please (give me or do that for me)

Sore o kudasai - That please

Douzo - Here you go! or Please (when you give something)

Kore o douzo - This, please.

Kochirahe douzo - This way, please.

Dōitashimashte / iie, iie - You're welcome

Gomennasai - I'm sorry
Sumimasen - Excuse me/ I'm sorry

Wakarimasen - I don't understand.

Itadakimasu - Thank you for the meal (before eating)
Gochisousama (deshita) - Thank you for the meal (after eating)