how to send message to user discord.py code example
Example 1: discord.py message user
if message.content == "dm":
await message.channel.send("Dming user")
dm = await message.author.create_dm() # Creates a dm channel with the user
await dm.send("What you want to send") # Sends the user the message
Example 2: store message sent by user in string discord py
response = client.wait_for_message(author=ctx.message.author, timeout=30)
myvar = response.content
Make sure to Define ctx and message if you want it to be controlled by a command