Marie:
Thank you for your invitation.I'm sorry I can not go with you on tuesday.Beacuse I have an English lesson in the morning.In the afternoon I'm playing soccer ball with some friends.At night I have to do my homework.So I'm fleeing very sorry.
Tony
OR
Marie:
It is my pleasure to be invited by you.but I am sorry to tell you I have to go to an English class on Tuesday morning and play football with my friend in the afternoon.Thanks for your invite and sorry for not coming.
Tony