The verbs querer (to want), esperar (to hope), and desear (to desire) are commonly used to discuss wishes, hopes, and fantasies.

Quiero que... - I want that...
Espero que... - I hope that...
Deseo que... - I desire that...

When a sentences starts with one of these verbs, and the subject of the sentences changes after que, then the verb that follows que must be in the subjunctive mood.

Yo quiero que Juan me ayude a limpiar la casa.
I want John to help me clean the house.

Yo espero que a tí te guste la música.
I hope that you like the music.

Yo espero que Juan los traiga.
I hope that John brings them.

Yo espero que tú puedas estudiar conmigo.
I hope that you can study with me.

Yo deseo que conozcas a mis padres.
I want you to meet my parents.

The word ojalá (would to God, I hope, I wish) is used like a verb in the present subjunctive to express wishes and hopes.

Ojalá que ya no necesite la operación tu mamá.
I hope that your mom does not need the operation.

Note: Although The use of subjunctive is required, the use of que is optional.

¡Ojalá tengas tiempo!
Hope you have time!

¡Ojalá vaya a verlo!
Hope I am going to see it!

¡Ojalá nos contesten rápido!
I hope they answer us fast.