How to: talk about plans and arrangements

Arnau: Hi, Ferran. Have you go a minute?
Ferran: Hello, Arnau. What can I do for you?
Arnau: I'm doing a fair for charity next month, and I'm looking for sponsors.
Ferran: That's a very good, Arnau. What's it for?
Arnau: It's for the hunger in the world.
Ferran: And when are you prepare the fair?
Arnau: Next Friday. I'm hoping to raise about 500€. Will you sponsor me?
Ferran: Yes, OK. It sounds like a gook cause. I hope you and the children in the world be happy!
Arnau: I'm going to try.
Ferran: Good luck, Arnau.
Arnau: Thanks.