"Why don't we have a barbecue?", said Mike. (use SUGGEST)
He suggested having a barbecue.
"If I were you, I'd invest the money in bitcoins", Ronnie said. (use ADVICE)
He advised me to invest my money in bitcoins.
"Don't worry the next meeting won't take place before December, 20th", Melania said. (use ASSURE)
She assured that the meeting wouldn't take place before December, 20th