Chinese phrase
很抱歉，我要取消〜 hěn bào qiàn wǒ yào qǔ xiāo 〜
Meaning
Sorry. I'd like to cancel ___
When to use it
It politely says sorry and asks for something to be canceled. It is common when ending a booking, order, or plan, and sounds courteous in a formal exchange.
Example dialogue
很抱歉，我要取消今晚的预订。 hěn bào qiàn wǒ yào qǔ xiāo jīn wǎn de yù dìng
I'm sorry, I'd like to cancel my reservation for tonight.
没问题，已经帮您取消了。 méi wèn tí yǐ jīng bāng nín qǔ xiāo le
No problem, I've already canceled it for you.