You cannot determine a zodiac sign by name alone
Zodiac sign is based on date of birth, not name
Ask for the person’s birth date
Match the birth date to the zodiac date range
Aries: March 21 to April 19
Taurus: April 20 to May 20
Gemini: May 21 to June 20
Cancer: June 21 to July 22
Leo: July 23 to August 22
Virgo: August 23 to September 22
Libra: September 23 to October 22
Scorpio: October 23 to November 21
Sagittarius: November 22 to December 21
Capricorn: December 22 to January 19
Aquarius: January 20 to February 18
Pisces: February 19 to March 20