fixes DATE_URL does not work Issue #47

[acolak]

ais website requires a input i header so I added
request.headers['X-Requested-With'] = 'XMLHttpRequest'

[mraddatz]

Do you need to change requirements.txt too?

[acolak]

@mraddatz yes --> #52

[bhargavkakadiya]

script exits when Checking for an earlier date: results nothing

[WhatDoor]

I also got same behaviour as bhargavkakadiya, and also the date list is still returning empty with this fix.

[bhargavkakadiya]

It might be returning empty because there is no dates available, and therefore script tends to exit instead of retrying

[WhatDoor]

I found that this fork works well - https://github.com/shcheglovnd/us_visa_scheduler_telegram/tree/main
But it is a bit different in that it uses docker to run and telegram for notifications.