At a café
The waiter brought her order without her saying a word, and you saw it.
How to say “Do you come here a lot?” in Vietnamese
Em hay tới quán này hả?
em hay toy kwan nay ha
Rough sound, not the tones. Short sentence, and smile.
literally: You often come shop this, right?
Why it works
Only use this line if you saw the clue. Asked cold it is a worldwide cliche; asked after noticing that the waiter already knows her order, it is observation, and that is audible.
Careful
`toi` is southern, in the North it would be `den`. `ha` is very casual: between strangers it passes in a cafe, but it would be too light in a professional setting.
What she says back
- Dạ, em làm gần đây.She's curious
Yes, I work nearby.
→ Ask what she does, one question only, and listen to the whole answer.
- Hôm nay là lần đầu.Could go either way
Today is my first time.
→ Tell her what is worth ordering here. You become useful, not pushy.
- Sao anh hỏi vậy?Could go either way
Why do you ask?
→ Tell the truth in one sentence: the waiter knew her order. Honesty defuses it.
- Dạ em đang bận chút ạ.That's a no
Sorry, I'm a bit busy.
→ `Da, xin loi da lam phien`, a smile, and you let her get back to work for good.