I don't want to ustilise the username or the ID of a user to get their profile info so I am using their first and last name. So far I can fetch the user based on first name:
{% set slug = 'first-last' %}
{% set firstNameSlug = slug|split('-')[0] %}
{% set lastNameSlug = slug|split('-')[1] %}
{% set user = craft.users.firstName(slug).first %}
How do I build on this code to fetch using the first name AND last name?