Please, thank you, and the basics of being polite.

• Zəhmət olmasaPlease (most common, lit. 'may it not be a trouble'; for requests)
• BuyurunHere you go / Please (go ahead) (polite offering or inviting; also 'yes?' when answering)
• Təşəkkür edirəmThank you (formal/polite)
• Sağ olThanks (informal, to one person)
• Çox sağ olunThank you very much (polite)
• DəyməzYou're welcome / Don't mention it
• BağışlayınExcuse me / Sorry (polite; to get attention or apologize)
• Üzr istəyirəmI'm sorry / I apologize (formal apology)
• BəliYes (formal/neutral)
• HəYeah / Yes (informal, casual)
• XeyrNo (formal/polite)
• YoxNo / Nope (informal, casual)