NFFD 2020: Prompt 4

Overheard

Write a flash in which the only dialogue in -- and the main focus of -- the story is a conversation overheard by the main character. 

If you’re submitting this to us, make sure to note that this is a response to Prompt 4: Overheard.

You can submit responses until 23:59 BST on Sunday, 7 June 2020 for a chance to be published here at The Write-In.