导购口语:

I'm always at you service.
随时为您服务。
We are already pleased to serve you at any time.
我们随时乐意为您服务。
W're at your service at any time.
我们随时为您服务。

语句解析:

Be at one's service 为……服务；at any time随时（提供服务）。
Tip：最为一名优秀的导购员，要真正醉倒随时为客户服务，用英文举行来表达就是be at one's service。

情景再现:

I am glad to be at your service anytime.
我乐意随时为你服务。
I am glad that I am at your service anytime.
我乐意随时为你服务。