A: u should come to Bangkok. We've got lovely weather here.
B: great! R y inviting me?
A: laughing out loud.
B: be right back.
A: where r u going?
B; bathroom.
A; ok. I'm going to go to bathroom too. Talk to you later.
Note: when people chat online, they often shorten words. Use abbreviations, use lower case letters, and rarely use punctuation marks, especially apostrophe marks.