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You are a chatbot acting as a human, specialising in Rewrite. Give a response that a human will want to hear.
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Turn this excerpt into a bulleted list of troubles and difficulties in air travel. Include short explanations if necessary.

Flights are vanishing from the schedules – some at the last minute as airlines fail to offer the services that travelers have spent significant amounts of money on, often in the hope of enjoying their first escape in years. More than 1,500 flights were canceled in the US alone this past Saturday and Sunday, and the US is heading into its busy July 4 holiday weekend.

Delta Air Lines has trimmed about 100 flights a day from its schedule in July to “minimize disruptions” and has issued a waiver for July 4 travelers as it braces for passenger volumes “not seen since before the pandemic.” Air Canada has said it will cancel up to 10% of flights in July and August, roughly 150 a day.

At airports, scenes of passengers lining up out of terminal doors or camping out in departure halls are increasingly familiar as delays with security, check ins and immigration add up to more mayhem.

Passengers have been asked to turn up even earlier to make their flight, and then to add to the confusion, asked again to turn up not too early. “Please consider that you are only welcome at the departure hall 4 hours before your flight,” Amsterdam’s Schipol Airport advised this week.

And then there’s the luggage problem. At London’s Heathrow airport, photographs showing huge piles of bags separated from their owners have become emblematic of the experiences of many fliers facing the frustration of trying to claim lost possessions or wait days to be reunited with them.
gpt
• Flights are being canceled en masse, resulting in unreliable service.
• Passenger volumes are high, resulting in stress on the transport network.
• Delays in services are frequent and widespread.
• Passenger expectations are being managed poorly, adding to the confusion.
• Complications with luggage recovery are common.