Provide the theme summaries for the following conversation: 

#Person1#: Good afternoon, Mrs. Brown. I've come to see Mr. Brown. 
#Person2#: Good afternoon, Mr. Green. 
#Person1#: Is he in? 
#Person2#: I'm sorry, but he's not in, he's gone out on business. 
#Person1#: Oh! I just drop in on him for a chat. 
#Person2#: Please come in for a cup of coffee. 
#Person1#: No, thank you. Please tell him to phone me when he comes back. 

Summary: 
Mr. Green comes to see Mr. Brown, but he's gone out. Mr. Green asks Mrs. Brown to tell him to phone.