M: We want to take a train to New York.

W: Regular or express train?

M: How much time would we save if we took the express?

W: About one hour, the next express train arrives in New York at 3:15.

M: And how much more do we have to pay for the express?

W: First class is 24 dollars more, and second class is 15 dollars more.

M: As long as we arrive one hour earlier, I don't mind paying a little extra. Then give me two second-class tickets on the express, pls.
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