Follow up SMS for client or prospect who doesn't respond for no reason

Hi Xxx, it has been awhile since I hear from you after we last met and sent you the proposal.

I am wondering if you are still keen in doing business with me because I am not getting any response from you.

If for any reason you do not wish to go ahead with planning through me, I can understand and totally respect your decision.

Just drop me a note saying you are not going ahead with me and we shall close the chapter.