German phrase
Haben Sie am ~ noch freie Plätze?
Meaning
Do you still have seats available on ___?
When to use it
This asks about open seats. It politely checks availability for a specific date or time.
Example dialogue
Haben Sie am Dienstagabend noch freie Plätze?
Do you still have seats available on Tuesday evening?
Leider nicht, am Dienstagabend sind alle Plätze ausgebucht.
Unfortunately, all seats are booked on Tuesday evening.