Airbnb host asked for flight numbers as well as flight times

Hi all, I have an airbnb reservation and the host asked for some details to make the check in and check out process smoother.

He asked for my flight times for arrival and departure which I understand, though I don't really see the need to get those if I say I will check in at x time and agree to check out by their scheduled time.

I felt a little weirded out that he also asked for flight numbers. This …

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