How does the past tense conveys politeness?

[blissful]

Hi

Did you wish to see me now?

Please help to explain how the past tense helps to suggest politeness or respect.

Is it possible to use.

Do you wish to see me now?

Thank you.

 

[bhaisahab]

Hi

Did you wish to see me now?

Please help to explain how the past tense helps to suggest politeness or respect.

Is it possible to use.

Do you wish to see me now? Yes.

Thank you.

Bhai.