Lǎobǎn chūchāi le.

老板出差了。

The boss is on the business trip.


Notes:

老板(lǎobǎn): boss

出差(chūchāi): be on a business trip

了(le): particle word

Example:

A：老板在哪儿？

    Lǎobǎn zài nǎr？

    wher's the boss?

B：老板出差了。

    Lǎobǎn chūchāi le.

    The boss is on the business trip.