请用英语跟我交流

Please talk to me in English so that I can improve my English level.

Please speak English with me

communicate with English please.还有please talking English。

In order to improve my English level ,please chat with me in English as possible as you can.

如果对老外这样说，人家会觉得自己只是你所利用的工练习英语的工具。所以对老外，你可以用商榷的语气说：Is it convenient to talk with you?(我方便和你聊聊吗)，这样人家会认为你很有诚意。如果就是对英语牛人（比如老师什么的），你就可以直接了当：Can I talk with you to improve my English? 表达意思的时候一定要简洁明了。