Thank you for your help.
Example: Thank you for your help. Answer: I was happy to do that.
Thank you for your help. Example: Thank you for your help. Answer: I was happy to do that.
Danke für deine Hilfe. 
Tack för hjälpen! 
Takk for hjelpen. 
Tak skal du have. 
Takk fyrir hjálpina. 
Tänan teid abi eest. 
Kiitos avustanne. 
Ačiū už jūsų pagalbą. 
Pateicos par palīdzību.