My Favorite challange

Nathan :Hi Andrea,how are you today?
Andrea :I am fine.How about you?
Nathan :I am fine too,what are you doing?
Andrea :I am counting my stamps collection.Collecting stamps is my hobby.
What is your hobby?
Nathan :My hobby is camping.
Andrea :sounds good.Where is your favorite location to camp?
Nathan :My favorite location is in the mountain.The air is very fresh.
Andrea :When will you camp again?
Nathan :Maybe next holiday.
Andrea :That's great idea.
Nathan :I'm sorry,I have to go.see you.
Andrea :see you too.