You're having a party. Prepare an invitation for your friend. You can use the invitation in Ex. 4a as a model. Alternatively, write an SMS message inviting your friend to your party. Use emojis.
I am hosting a party at my house on Saturday night! We are gonna watch films, play games, and eat sweets, ofc! The party starts at 5 p.m.! Please let me know if you can come at the party until Thursday. Waiting for ya!