When I was about 10, my parents drilled into me an important phrase when they were running their bakery and I was at the till:
"Would you like anything else?"
The customers would pause, look around, visually devour the pastries, cookies, and cakes around them.
"Hmmm, I think I'll have a butter tart too, thanks."
The alternative, which I hear all too often, "will that be all"? The brain immediately rushes to say, "Yes".
Be mindful of how phrase your marketing material, your sales pitch, your follow-up questions, and your internal processes. You never know what subtle direction it naturally leads us.