导购口语:

We don't take tips here, but thank you anyway.
谢谢您的好意，我们这里不收小费。
Thank you very much, but we don't take tips in China.
谢谢您的好意，不过在中国我们不收小费。
We don't accept tips, and thank you just the same.
我们不收小费，但我仍然要谢谢您。