Sentence examples similar to a frequent colloquium from inspiring English sources

Author is a frequent customer.

"I am a frequent traveller.

A frequent subject is Michelle Obama.

This is a frequent error.

A frequent topic of conversation….

It is a frequent sound.

Wozniak is a frequent customer.

Why not?" A frequent criticism.

Become a frequent flier.

When a visiting scientist gives a colloquium, more often than not I don't understand what he or she is saying.

(A colloquium is a sort of writing workshop for graduate students).