What English should the tea delivery man learn in the hotel lobby bar?

Can I help you, sir/madam? May be helpful for oil, color /Reddy? What can I do for you, sir/madam?

Excuse me, sir/madam? (a gram of q laughs, color /Reddy? Excuse me, sir/madam.

Your tea/coffee. Your tea/coffee.

Please enjoy. Please enjoy it.

I'd love to. I'd love to.

Thank you for your general advice. Thank you for your generous tip.