能帮我看看我这句英语说得对吗？谢谢

完全正确。advise是较正式的用法。

Please kindly refer to the following mail and offer your available time to attend the conference call, thanks.
呵呵，挺好。该个词，看看把

advise可以改成share
在您合适的时间里进行电话会议。

你是想说
请您回复邮件并告诉您的出席时间
吗？

please reply the mail and keep your schedule informed to us
仅供参考
楼上 小狐狸列那 是高手