Provide the theme summaries for the following conversation: 

Gerald: Can I ask you a favour?
Judith: What is it?
Gerald: Maggie and I will be back home very late tonight.
Judith: Work?
Gerald: Unfortunately. Didn't expect this in the morning.
Judith: So?
Gerald: Could you come by our house and let the dog out into the yeard?
Judith: I don't have the key.
Gerald: That's not a problem. It's under the frog.
Judith: Which frog?
Gerald: Next to the entrance there's a pile of stones and somewhere amongst the there's the front door key.
Judith: Really? I thought ppl only did that in the movies.
Gerald: Yeah. Really. Can you make it or should I ask someone else?
Judith: No, I'll do it. I can pop by around 4.
Gerald: That'd be great. We're in your debt. 
Judith: Don't mention it. 
Gerald: No, seriously. Let us invite you to dinner as a means of thank you.
Judith: That's very nice of you.

Summary: 
Gerald and Maggie will be home very late. Judith will let their dog out around 4. The key to the house is under the frog. Judith will join Gerald and Maggie for dinner.