Provide the theme summaries for the following conversation: 

Alexander: That was a great photo you posted on your account today.
Daniel: Thank you, Highness. It was very kind of you to comment on it.
Alexander: I expect to come to Warsaw next month. Would you be available for lunch on say the 6th?
Daniel: Yes, Highness. It will be great to see you again, and to hear about your agricultural projects.
Alexander: I have also taken up photography, and would be grateful for some pointers
Daniel: I will be glad to be of service, Highness.
Alexander: I have a Canon. Do you like Canons?
Daniel: Yes, I am a "Canonite" myself, Highness. It will be easy for me to show you around what your camera can do.

Summary: 
Alexander will come to Warsaw next month so he'll see Daniel for lunch on the 6th. Daniel will share his knowledge on Canon camera with Alexander.