You do not need to make a phone call , only need through the network, can finish all reservations .
Has a look the actual example :

First step Submits the order form , Below is the order form style which we receives :

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Second step Confirms your ordering , Below Confirms the single example :

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Third step Payment , Below is the payment certificate example :

Chick here : http://www.ly-travel.com/westu/demo.html
User Name : annie Password : annie

Fourth step Boarding Certificate , The sample of Boarding Certificate following :
More about Boarding Certificate

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