You're welcome. (As a reply to "Thanks") : ꯌꯥꯝ ꯅꯨꯡꯉꯥꯢꯂꯦ ꯫ (Yaam Noong-Ngai-Le) (literally, "It's pleasure", it's not exact translation of "You are welcome", but its usage is exactly equivalent.)
Goodbye : ꯀꯥꯢꯅꯂꯁꯤ ꯫ (Kai-Na-La-See); Goodbye (informal) : ꯆꯠꯂꯦ ꯫ (Chat-Leh) (use this only to mutual friends)
I can't speak name of language [well]. : ꯑꯩ English [ꯐꯆꯅ] ꯉꯥꯡꯄ ꯉꯝꯇꯦ ꯫ (Ei English [Pha-cha-na] Ngaang-pa Ngam-te)
Do you speak English? : ꯅꯪ [ꯏꯪꯂꯤꯁ] ꯉꯥꯡꯄꯂꯥ? (Nang [English] Ngaang-pa-laa?)
Is there someone here who speaks English? : ꯃꯁꯤꯇ [ꯏꯪꯂꯤꯁ] ꯉꯥꯡꯄ ꯃꯤ ꯂꯩꯄꯂꯥ? (Ma-see-ta [English] Ngaang-pa Mee Lei-pa-laa?)
Help! (Directly asking for help) : ꯃꯇꯦꯡ ꯄꯥꯡꯄꯤꯌꯨ! (Ma-teng Paang-pee-yoo!) or (Immediately asking to save me/us/you/him/her/them) ꯀꯟꯄꯤꯌꯨ! (Kan-pee-yoo!)