应用: 携程旅行
任务: 打开携程旅行，预定07-29日北京到杭州，08-03返回的机票。
操作步骤:
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action: CLICK
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action: CLICK
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action: CLICK
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action: CLICK
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action: CLICK
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action: CLICK
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action: CLICK
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action: CLICK
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action: CLICK
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action: CLICK
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action: CLICK