Before boarding at the airport, ask for a written announcement in English.

Your flight _ _ _ _ (2) is now boarding. Please take your luggage, show your boarding pass and board the plane from _ _ _ _ _ _. Have a nice trip. Thank you!

Ladies and gentlemen, may I have your attention:

The flight to is now boarding. Please get your luggage and boarding pass ready and board the plane from Gate 4. We wish you a pleasant journey. Thank you.

This is the broadcast word we use now. I don't know what you mean by "flight attendant tips and so on". There is no mention of flight attendants in the boarding broadcast, because the sentence should be concise and clear, and the job of flight attendants is after boarding.