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selector
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sequence
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cond CustomerChatting()
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act DealChat()
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sequence
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cond HasSubTask()
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sequence
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act SubTaskPlaceHolder()
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sequence
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cond FocusingCustomer()
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act ServeCustomer()
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sequence
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cond NewCustomerComing()
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selector
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cond At(Robot,Bar)
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act MoveTo(Bar)
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act GreetCustomer()
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