Example 1

You : Would you like to join us in the party tonight?

Friends : Sure.

You : Ok. See you at Peter’s house tonight at 9 pm.

Example 2

You : Are you coming to the party tonight?

Friend : I’m afraid not.

You : How come?

Friend : I have to study for an exam tomorrow.

You : Well. In that case, I will have to let you go.

Friend : Sorry. Maybe next time.

Example 3

You : Do you want to join the party tonight?

Friend : I wish I could but I have to visit my grandmother.

You : That’s alright.