DM should re-read the rules since a description of a dragonborn in the rules state they mostly do not have tails, but there are exceptions as well as the fact that “seducing” someone would be a deception or persuasion check as if I said “I lie to the guards” isn’t me trying to use a skill called “lying.”

Seduction is RAW, it’s called Persuasion (or Deception) and likely has a high DC.