英语翻译我需要为您准备回程的航班吗？您需要何时的航班？

I am waiting for his response about backhaul flight information
do you need me to prepare your backhaul flight schedule?
what time do you need for you flight?

I am waiting for him to reply to me the information of his back flight

I am waiting for his reply about the details of the return flight.
So do I need to make a reservation for your return flight?
Which flight do you prefer?When?