Stephen: Can I have a single to the city center please?
Clerk: single? Of course, here you are
Stephen: How long does it take?
Clerk: Usually about thirty minutes.
Stephen: What time's the next train?
Clerk: The next train's at 3.15
Stephen: Which plat form does it leave form?
Clerk: Platform 3. Over there.
Stephen: thank you.
Clerk: you're welcome.
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