Gōngsī chūchāi zhǐ néng dìng jīngjìcāng, bù néng dìng shāngwùcāng.
For company business trips, we can only book economy, not business class.
Tā yòng lǐchéng shēngcāng dào le shāngwùcāng.
He upgraded to business class using miles.
Shāngwùcāng de cānshí quèshí bǐ jīngjìcāng hǎo bùshǎo.
The meals in business class really are much better than economy.
