It is very convenient to check in directly through the machine. However, I did not explain it clearly at first and thought that I would have to wait for the assistance of the counter staff, which wasted some time. When I checked out, I thought that I also needed the assistance of the machine. However, at this time, the counter staff said that if there is someone, just leave it to the staff. That makes people wonder why we are asked to operate the machine after checking in until someone is available....
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