A friend of yours has invited you at a dinner on Eid in Rawalpindi. S/he has sent a card to you. Suppose you are living in Lahore. Write an informal...

A friend of yours has invited you at a dinner on Eid in Rawalpindi. S/he has sent a card to you. Suppose you are living in Lahore. Write an informal letter to her/him. Accept the dinner and thank her/him for the invitation. Then invite your friend to come and stay with you in Lahore whenever s/he is free