[Date]

[Addressee]

Dear [Name]:

Our proposal to [proposed service] was submitted to you 
some time ago. Since we haven't heard from you, we wanted 
to be sure that it was brought to your attention. We are 
enclosing a copy of our original proposal for your review. 

As you will note, the price quoted is good for 30 days following 
the submission of our bid. Therefore, we thought it would be 
wise to check with you at this time to see if you are interested 
in having us [service to be performed].

We will be looking forward to your reply and hope that we 
will have the opportunity to be of service to you in the near 
future. 

Very truly yours,