Dear (numele prierenului),
Sunday, 8 may I am going to mountain with our friends (numele prietenilor). We are coming back wednesday. Cost 250$ for person with meals included. We will go with my father car, it is big. I checked, and the weather is nice. I find some places to visit. Tomorrow I will reserve the rooms. Do you want to come with us?
From (numele tau)
Sper ca te-am ajutat☺