Formal:
* "Comment allez-vous?" (How are you?)
* "Ça va bien, merci. Et vous?" (I'm fine, thank you. And you?)
* "Bonne journée!" (Have a good day!)
* "Je voudrais..." (I would like...) - To start a request or order.
* "Puis-je vous aider?" (Can I help you?) - If you're offering assistance.
Informal:
* "Ça va?" (How's it going?)
* "Bien, et toi?" (Good, and you?)
* "Salut!" (Hi!)
* "T'as de bonnes nouvelles?" (Do you have any good news?) - Use with close friends.
* "On se voit plus tard?" (See you later?)
Situational:
* "C'est gentil de votre part." (That's kind of you.) - If someone is being helpful.
* "C'est bien de vous revoir." (It's good to see you again.) - If you've met the person before.
* "Je m'appelle..." (My name is...) - If you're introducing yourself.
Remember:
* "Bonjour" is used both as a greeting and farewell, so it's important to consider the context.
* Using a polite tone and appropriate language will help you make a good impression.
So, let me know what the context is, and I can give you a more specific answer!