Why? The bot would say "greetings" only during start of the match, first turn or even second turn, but just once. And "well played" when the match finishes. So the bot will have good manners :D
That will do that the bot more human-like. If you check on the internet about bots you will see some characteristics for bots:
- No arrows (not true for this bot)
- Never answer
- Always same time between moves (not true for this bot)