Write two sentences. One should use informal language while the other uses formal language.
Informal: "Hey, wanna hang out later? We can catch a movie or grab some pizza."
Formal: "Hello, would you be interested in spending some time together at a later hour? We could go see a film or have some pizza."
Informal: "Hey, wanna hang out later?"
Formal: "Would you be available to meet up later?"
Informal: "Hey, wanna grab some grub later?"
Formal: "Would you like to join me for a meal later?"