但是我没有你离开上海的具体行程 英文翻译

你指的是对方离开上海的行程还是离开上海后的行程？

如是离开上海的行程：
But I don't know the details of your itinerary for leaving Shanghai.

如是离开上海后的程：
But I don't know the details of your itinerary after leaving Shanghai.

But I did not you leave Shanghai for the specific itinerary

But I don't have your detailed schedule for leaving Shanghai.

But I don't know the details of your journey after leaving Shanghai.

But I don't have detailed schedule of your trip for leaving Shanghai.

But I do not have your concrete journey that leaving Shanghai
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