Excuse me, Would you please direct me to the library?
May I please have another cup of coffee?
Pardon me miss, how far is it from here to the station?

Buenos dias.
Donde esta Susana?
Esta en la cocina?
I can't tell you the number of times that folks have come up to me while I am on the phone, or in conversation with someone else, and just launched into whatever is on their mind or about something they want, blah, blah, whatever.
Que voulez-vous?
Laissez-moi tranquille.
Is everyone in such a hurry? I thought we were south of the Mason-Dixon line in D.C. Take a breath and wait your turn. I wonder if I would have noticed this conversational erosion as much if I didn't have a five-year-old who does the same thing. But I can say to her that she needs to slow down and wait until it's her turn and Mommy is done talking. What do I say to the grown-ups?
Mi scusi.
Mi potrebbe dare alcune informazione?
Con molto piacere.
I really want to know when the baby boomers decided that being polite, even civil, was for the birds. My generation has its conversational issues, but even a "Hey dude," while heavy on the Keanu, is an acceptable preamble. Especially when compared to busting in mid-conversation to inanely ask about those TPS reports.
So what's a dude who hungers for a little polite conversation to do? Try to be polite, I guess and hope some bounces back.
Hello there. How are you? Very well, thanks, and you?
How was your weekend? Do you know the way to the dog races?
I think Susanna is in the kitchen.