I'm still really new to coding and the only way I can get this command to work is by doing what I'm doing below. I'm pretty sure there's a better way to write it, but it's not exactly how I want it anyway.
I'm trying to mention the user who uses the command at the beginning and then mention the user that's mentioned within the message. message.author.name is only returning the name of instead of the actual tag of the user that uses the command. Also - I'm not sure if there's an easier way to put the mention first, the only way I could think of doing it is to put a blank space before the mention.
elif message.content.startswith('!sayhello'):
user = message.mentions[0]
responses = ['' + message.author.name + ' says hello to' + user.mention + '']
choice = random.choice(responses)
await client.send_message(message.channel, choice)