In the offer letter it was written that if you did not respond back with the signed offer letter within 3 days the offer may be withdrawn. If you don't receive a reply, you could also consider calling their office or contacting someone else in the HR department.An example phrase to use would be "Hello. An Application Submitted message confirms that you have applied for the job. In this article, we explore the stages of a job offer and how to accept it, and provide examples to help you look professional. This document is typically a positive response to a job offer. We use this time to gather information on your: Past wages; Job separation, and; General eligibility. Department: HOUSTON POLICE DEPARTMENT. Join one of the largest community colleges in the country and launch your college career. Applying is free and everyone is accepted.