YOU SAID:
hi, could i get a coffee please.
INTO JAPANESE
こんにちは、コーヒーをいただけますか。
BACK INTO ENGLISH
Hello, can I have a cup of coffee?
INTO JAPANESE
こんにちは、コーヒーを一杯いただけますか?
BACK INTO ENGLISH
Hello, can I have a cup of coffee?
Come on, you can do better than that.