You are learning confusion recovery: you will read the scene it happens in, take apart the pattern behind them (confusion recovery phrases), hear them in a conversation, rehearse them, and finish by saying one thing out loud to be graded.
Everywhere in New York. Someone speaks at full American speed and you catch nothing. New Yorkers are direct but patient with non-native speakers. These phrases keep you in the conversation.
New York coffee culture has its own vocabulary. A "regular" coffee at a deli means coffee with milk and two sugars — not a plain coffee as in most of the world. "Half-and-half" is equal parts coffee and milk. A "flat white" is from Australia via hipster culture. "Drip coffee" is just regular brewed coffee.
The stranger orders at a third-wave coffee shop in the West Village. The barista asks: "Do you want that on a single or double shot, with whole or oat milk, hot or iced?"
The stranger stares. "Sorry — could you speak a little more slowly, please? I didn't quite catch all of that."
The barista smiles. Repeats it clearly. "Oh! I understand now — hot, with oat milk, double shot. Is that right?"
"Perfect." "Got it, thanks!"