Given a sentence in Vietnamese, generate a new Vietnamese sentence by performing small changes on the sentence. Here, make sure that the changes are semantically related and syntactically similar to the input. And the generated sentence should have high commonsense plausibility, that is to have reasonable probability of it being true.

Nếu bạn nhìn thấy bay trên máy bay, sau đó bạn nên đi máy bay.
Nếu bạn muốn bay trên máy bay, bạn nên đi máy bay.