1 Yes, I am. I am going to visit London in summer.
2 No, I am not. I am not going to see London Eye.
3 No, I am not. I am not going to see Westminster Palace.
4 No, I am not. I am not going to see the Queen.
5 No, I am not. I am not going to see Big Ben.
5 I am going to see Trafalgar Square in London.