There are many English expressions for saying good-bye, ranging from informal to formal ones.
· Simple Good-byes
o Bye for now.
o See you later.
Talk to you soon.
o See you around. Take care.
o See you real soon.
o See you tomorrow / next week.
o See ya. (informal)
o See you later, alligator. (slang)
· More Formal Good-byes
o (It was) nice to see you. Good-bye.
o (It was) good to see you. Good-bye.
o (It was) nice talking to you. Bye.
o Take care. See you again.
· Saying Goodbye to Someone You Have Just Met
o Nice meeting you.
o It was a pleasure meeting you. (formal)
o It's a real pleasure to have met you. (formal)
o It's been a real pleasure. (formal)
Ngan was shopping with Hng at a bookstore where she ran into Nga (met Ichiro by chance). They hadn't seen each other for a while.
Ngan: Hey! What a surprise to see you here!
Nga: Yeah! Haven't seen you in ages! How've you been?
Ngan: Fine. How about you?
Nga: Well, just plugging along.
Ngan: Oh, have you two met?
Nga: I don't think so.
Ngan: Hung, this is Nga. Nga, Hung.
Nga: Nice to meet you.
Hung: Same here.
(They chatted for a while)
Nga: Listen, I gotta go. It was nice seeing you again, Ngan.
Ngan: Nice seeing you, too. Let's get together again soon.
Nga: Yes. Let's do that. Nice talking to you, Hung. Take care.
Hung: Nice meeting you, Nga. See you.