To talk about what "you have", for example, a house, a pet, a car, etc., we use the verb "tener" (to have).
Have a look at the following examples:
Notice how you can drop the pronoun "yo". In Spanish pronouns are often not used.
To talk about someone else's possessions, you would use either "tienes" or "tiene", depending on the informality or formality used. Generally speaking, you would use "tienes" to talk about or ask someone you know well, a young person, or a child, and you'd use "tiene" to talk about or ask someone more formally, when you don't know the person, it is an elderly person or it's a formal context, like in a bank or interview:
Notice again that the pronoun "usted" can be omitted.
"Tengo" (I have)
"Tienes" (you have / do you have? [informal])
"Tiene" (you have / do you have? [formal])