Why don't you sit down? Now, there are several questions I must ask, if you don't mind.
Not at all. Go ahead.
What is the purpose of your visit to the States?
I'm going to attend a conference on air pollution.
When and where is this conference being held?
It's being held in the first three weeks of February at the University of Stanford in California.
Who will pay your expenses?
The University of California. Here is the official letter of invitation.
I see. Fine. When do you want to go?
I'd like to leave in mid-January if my passport is ready by then.
That shouldn't be difficult. Why don't you phone me about January 10th? I should be able to give you an answer then.
Thank you.