This is a notification about the following issues were submitted at [month day-th]*. There was inquiries from the other agencies for the same venue, please let us know your progress.
* month day の記述例: 3月25日→mars 25th、又は、25th of mars.
This is to notify you regarding following matter submitted on ○/○. We would like you to report on progress because we have received a business inquiry of other agent for the same site.
I contact you about the following matter which I submitted on ○○. I would like to report the progress to me, because I receive the inquiry of the same meeting place from other agencies.