Need to write a python code to retrieve, the available routes between 2 given countries along with the flight route and duration

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Above is the table i have in hand, and i need to get 2 outputs as follows.

1. Available routes between given 2 countriesexample: starting country = Sri lanka and destination = AustraliaRoute 1 Sri Lanka Singapore Australia : Duration 11.25 hrsRoute 2 Sri Lanka Australia : Duration 9.25 hrsRoute 3 Sri Lanka Japan Australia : Duration 18 hrsRoute 4 Sri Lanka Singapore Japan Australia : Duration 18 hrs

2. The best route based on the above selectionRoute 2 Sri Lanka Australia : Duration 9.25 hrs