Is it a direct flight? 是直达的吗?

Yes,it's a non-stop. 是，是直达的。

How many flights are there to Shanghai every day? 每天有多少次航班飞往上海?

Could you check other flights to Hong Kong in the late morning of the 4th as well,please? 您能再查查4号上午飞往香港的其他航班吗?

What is the flight number and date of departure,please? 请问航班号和起飞日期是什么?

We have a nonstop flight leaving Beijing at 9:25. 我们有直达航班9点25分从北京起飞。