For a few days, I am on travel for my job. I am in New Orleans and arrived here yesterday. When I got a cab (taxi) at the airport, the driver (سائق - sa’iq) was from the Middle East. So, I was able to say “thank you” (شكرا - shukran) in Arabic, which certainly he wasn’t expecting. Then, I was able to say some other things, in a mix of colloquial Egyptian (when I knew what to say) or otherwise I used the standard Arabic. I don’t think he was from Egypt (I think he was from Bahrain, judging by the newspaper he was reading), but the Egyptian dialect is pretty well understood thanks to popularity of Egyptian films.
I explained that I was on a business trip (أسافر في شغل - isafar fi shughal), and that I was here for a few days (”ha’ud ka zayohm”), which is Egyptian colloquial. In standard Arabic, a few days is عدة أيام - “ada ayam”.
I also was able to explain why I knew or was learning Arabic:
أدرس العربية لأن سأسفار إلى مصر هذا صيف

This translates as saying “I am studying Arabic, because I will be traveling to Egypt this summer.” Then, I was able to say “shukran. da a’la shehnak” - this means in colloquial Egyptian Arabic, “thanks, this is for you” (my cab fare and tip)

I’m sure I wasn’t speaking perfect Arabic, but did pretty well I think. The driver wasn’t sure that I could speak English, which of course I can, but he understood what I said in Arabic and I could understand him. In all, this was great practice and helps in building my confidence. I am somewhat hesitant to speak up in Arabic, because I know my vocabulary, grammar, and grasp of colloquial Arabic is still limited.