Visiting London

Nick: Alex, I have a tour tomorrow. We go with a guide and a group.
Alex: Oh. How many people are in the group?
Nick: Ten people. The guide shows us everything.
Alex: Hmm. I don't like groups. I prefer to walk alone.
Nick: Alone? But how? You don't know London.
Alex: I have a tourist map. It is very easy.
Nick: What do you want to see?
Alex: First I want to see Tower Bridge. Then Buckingham Palace.
Nick: Our group goes there too. But we go by bus.
Alex: I walk. I like to stop and look at everything.
Nick: But a guide knows many interesting things about the city.
Alex: Yes, that is true. But I go when I want and stop when I want.
Nick: Huh. I understand. We are different travelers.
Alex: Yes. But in the evening let's meet and talk about our day.
Nick: Great idea. See you at six o'clock.
Alex: See you, Nick. Have a great tour.