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Nowadays people who go on business mostly travel by air, as it is the fastest means of travelling.
Here are a few hints on air travel that may be helpful:
Passengers are requested to arrive at the airport two hours before departure time on international flights and an hour on domestic flights as there must be enough time to complete the necessary airport formalities.
In this text there are hints for travel by train.
People go on business by any means of traveling, especially by car.
One hour is not enough time to complete all necessary airport formalities.
Travelling by air is the fastest one.