Meaning of おねがいします in Japanese

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Definition of おねがいします

おねがいします(onegaishimasu) 【お願いします ·御願いします】

よろしくおねがいします(yoroshikuonegaishimasu) 【よろしくお願いします ·宜しくお願いします】

(exp) please remember me; please help me; please treat me well; I look forward to working with you
今後ともご支援いただけますよう、よろしくお願いします。
I hope that you will continue to favor us with your support.

会計かいけいはお帰りおかえりのレジでおねがいします。

Pay the cashier on the way out.

White bread, please.

I'll have two hot dogs with mustard and ketchup.

Please give me a little more chocolate.

I'd like to check out. Do you have my bill?

Could I have a slice of cheesecake.

I'd like a double room.

Three coffees, please.

Could I have a cup of coffee?

Could I have three cinnamon donuts?