上个月去办的美国签证，但是面签当场没给签证，然后给了一个administrative processing。一直到今天才发了一封邮件，如下。
我登录到签证系统，显示让我到某个DX delivery的地方去提交我的护照。想问一下有经验的MM，是不是只要提交护照就好了，还需要带其他什么文件么？一般护照交上去多久才能拿到签证？谢谢。
（我知道除了护照还要打印那几张带barcode的纸，就想问一下还有什么其他文件要交上去的。下面的邮件说PLEASE SUBMIT YOUR PASSPORT & TRAVEL DATES/INFORMATION。这里的TRAVEL DATES/INFORMATION是什么？）
A U.S. Department of State Consulate officer located in London has indicated that additional documents are required for
Please log into your user account at https://ais.usvisa-info.com/en-GB/niv/account and follow the system instructions to generate instructions on how to send Visa application documents to the U.S. consulate.
Processor comments
PLEASE SUBMIT YOUR PASSPORT & TRAVEL DATES/INFORMATION YOU MUST SUBMIT YOUR PASSPORT WITHIN FOUR MONTHS OF THIS E-MAIL OR YOUR CASE WILL BE CLOSED. You are NOT required to submit any additional supporting documents.
Best regards,
The CSRA Visa Appointment and Information Service Team