To start a conversation with someone you've just met, it's fairly safe to talk about what people have just done. For this, we use the present perfect 'have'.
"Have you been here long?"
"Have you been to Sydney before?"
"Have you seen the Opera House?"
"Have you tried any restaurants?"
When meeting someone new on business, but in a social setting – there are a few safe topics – we can talk...
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Getting to know someone you've just met