Grammar help please??

Hi There,

Can you check for me if I am grammatical in these sentences, please?

This car is equipped with an air conditioning.

This car equipped with an air conditioning. (Is this one correct?)

Is this car equipped/come with an air conditioning?

Does this car equip/come with an air conditioning? (IS this one correct?)

In the shop, I am asking a salesperson,

“Do you have a car equipped/come with an air conditioning as a standard?” (Can I use "come" rather then "equip")

The salesperson said,

“Yes, I do have a car quipped/come with an air conditioning as a standard.”

Many thanks.