Provide the theme summaries for the following conversation: 

Earl: did you buy your plane ticket to the UK?
Samantha: yes, i did. what a time to be heading over there.
Earl: i know. the situation seems to be changing constantly.
Samantha: very true. a lot could happen over just one week.
Earl: where will you be staying?
Samantha: in some hostel near Kensington Gardens
Earl: oh wow, that's a nice area
Samantha: yes, i have fond memories of it from my last visit
Earl: when is veronika meeting up with you?
Samantha: Thursday. She's flying in from Prague that morning.
Earl: cool. whens the last time you saw her?
Samantha: 4 years ago, actually
Earl: Will be great to meet up with her finally
Samantha: indeed

Summary: 
Samantha travels to the UK and will stay in some hostel near Kensington Gardens. Veronika flies from Prague and will meet her on Thursday. They didn't see each other for 4 years. 