Provide the theme summaries for the following conversation: 

Michael: We're leaving in 15 min
Mike: are you taking the dog?
Lexi: yes, Polly is going with us
Lexi: so you only have to take care of the plants
Lexi: I left you a list how to water every of them
Mike: that sounds scary
Lexi: it only sounds scary, but it's not difficult, you'll see
Mike: how often should I visit?
Lexi: twice a week will be perfect
Mike: Ok, I though every day, like Monday- this palm, Tuesday - thins palm etc...
Lexi: no, I'm not so insane, and they are not so needy
Lexi: The best would be if you come by on Tuesdays and Fridays
Mike: ok, no problem
Lexi: thanks a lot
Mike: enjoy Barbados! and send me pictures

Summary: 
Lexi and Michael are leaving with the dog in 15 minutes. Lexi left Mike instructions on how to water the plants. Mike will visit on Tuesdays and Fridays to do it. Lexi and Michael are going to Barbados. 