You're welcome. (As a reply to "Thanks") : ꯌꯥꯝ ꯅꯨꯡꯉꯥꯢꯔꯦ ꯫ (Yaam Noong-Ngai-Re) (literally, "It's pleasure", it's not exact translation of "You are welcome", but its usage is exactly equivalent.)
Goodbye : ꯀꯥꯢꯅꯔꯁꯤ ꯫ (Kai-Na-Ra-See); Goodbye (informal) : ꯆꯠꯂꯦ ꯫ (Chat-Leh) (use this only to mutual friends)
I can't speak name of language [well]. : ꯑꯩ English [ꯐꯖꯅ] ꯉꯥꯡꯕ ꯉꯝꯗꯦ ꯫ (Ei English [Pha-ja-na] Ngaang-ba Ngam-de)
Do you speak English? : ꯅꯪ [ꯏꯪꯂꯤꯁ] ꯉꯥꯡꯕꯔꯥ? (Nang [English] Ngaang-ba-raa?)
Is there someone here who speaks English? : ꯃꯁꯤꯗ [ꯏꯪꯂꯤꯁ] ꯉꯥꯡꯕ ꯃꯤ ꯂꯩꯕꯔꯥ? (Ma-see-da [English] Ngaang-ba Mee Lei-ba-raa?)
Help! (Directly asking for help) : ꯃꯇꯦꯡ ꯄꯥꯡꯕꯤꯌꯨ! (Ma-teng Paang-bee-yoo!) or (Immediately asking to save me/us/you/him/her/them) ꯀꯟꯕꯤꯌꯨ! (Kan-bee-yoo!)