不客气。跟你一起合作很开心!

Bú kèqi. Gēn nǐ yìqǐ hézuò hěn kāixīn!

You're welcome. We're happy to work with you!

好的！不客气。

Hǎo de! Bú kèqi.

Okay! You are welcome.

不客气。有问题可以随时联络我。

Bú kèqi. Yǒu wèntí kěyǐ suíshí liánluò wǒ.

You're welcome. Contact me at any time if you have a problem.