When he expressed his gratitude, I replied, 'No, thank you.'

Thanks for helping me with the party yesterday.

Thank you so much for your help.

Thank you very much for this wonderful gift.

Yesterday's party was fun, thank you very much.

Thank you very much, without your help, I wouldn't have been able to complete this project.

Thank you very much, your help was really useful.

I am deeply grateful for your help.

Thank you for cooking for me.

He may say he's a doctor, but he's actually a veterinarian.