Lǎobǎn chūchāi le.
老板出差了。
The boss is on his business trip now.
Notes:
老板(Lǎobǎn ): boss
出差(chūchāi): go on business trip
了(le): particle word
Example:
A:老板呢?
Lǎobǎn ne?
wher's the boss?
B:老板出差了。
Lǎobǎn chūchāi le.
The boss is on his business trip now.