单项选择题

Conversation 2
[听力原文] 8-10
M：I’d like to book a ticket to Los Angeles．
W：What day are you planning to go
M：I am supposed to be there on the morning of the 14th But I’d rather get there on the evening of the 13th．
W：What time would you like to leave
M：Late in the afternoon，after work．
W：We have a flight at 4:30．
M：That’s too early．I can’t get out of work until five．Do you have a later flight
W：The next flight is at 5:15，and there is another at 6:30．
M：I’d better take 6:30．It takes quite a while to get to the airport．
W：The flight only takes an hour and a half．It arrives at 8:00．You can have a rest in the evening．

Why doesn’t the man take the flight at 4:30（）

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