I've been asked "Shall we chat then?".
The automatic affirmative answer that I would give is "Yes, let's." But in this case, the email conversation is a bit more formal, and I feel my go-to answer would be a bit too informal in the emails' context. (An alternative "Yes, please" that works for most "shall we" questions is also rather an unfitting reply in this case, I think.)
Is there a (bit) more formal way to say "yes" in response to a "shall we" (without sounding like a mock reply, such as "Yes, we shall")?