No, that is their job. They cannot diagnose a condition, but they are specifically trained to tell you when to see a doctor for that cough/rash/symptoms. They're specifically trained to tell you which medication can best manage your symptoms (for instance, a cold or flu, muscle aches, headaches, etc) with the least number of side effects and the greatest efficacy. In most of the US, pharmacists are also allowed to perform both subcutaneous and intramuscular injections - whether for vaccinations OR to inject a medicine into a patient for them, or show them how to inject it themselves in the future. And while doctors do diagnose and come up with treatment plans, it's the pharmacist who has the information on what each medication does and how to take them for best results.
An example: My PCP prescribed a medicine bid(twice a day), but it was my pharmacist that told me specifically at what time or before what activity that I should take that medicine. While my PCP knew I also take a multivitamin everyday, it was the pharmacist that specifically told me to not take my medicine within 2 hours of taking my multivitamin as one of the ingredients (calcium) significantly lowers the efficacy of the medication if taken at or near the same time.