Use the following steps to go to the section of your return to indicate that you do not have a Health Savings Account. You do not report any information in your return with regard to your medical FSA.
Since you stated that you do not have an HSA or MSA, the instructions above will allow you to be sure that you did not accidentally indicate that you do that one of those accounts.
If you have an FSA for medical expenses, there is nothing that is reported on your tax return with regard to the FSA. You do not need to enter it anywhere. The only consideration for the FSA is that you should not enter any medical expenses that were reimbursed by the FSA. Otherwise, it is not reported at all.