情景對話--Ways of asking permission 得到許可

A: Excuse me, is this seat taken?
    B: No, I don't think so.
    A: Mind if I sit down?
    B: No, go ahead.
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    A: May I use this telephone?
    B: Certainly.
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    A: I wonder if we could park here.
    B: No, we better not.
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    A: Let me get your phone number.
    B: Sure, it's 55-7554. Got it?
    A: Yeah, thank you.
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    A: Wait a second. I want to write it down.
    B: Okay. It's 150 Poplarville, apartment 3-G.
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    A: May I bother you a minute?
    B: Sure. What can I do for you?
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    A: You can't enter the building without permission.
    B: I've lost the permission card.
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    A: Can you give me a better price?
    B: I am sorry. we can't change the price.