Implement a system for a contactless travel card for the London underground.

• The card does not need to be topped up.
• The card charges the owner's bank account directly when used.
• The card is used by touching in and out at train stations.
• The train system accepting this card has two categorical zones of stations, Zone A and Zone B.
• The stations within the zones are as follows:

• Travelling within Zone B is more expensive than travelling in Zone A.
• The price of Zone B is inclusive of travelling within Zone A.

• A Single is a journey from one station to another
• A Day fare includes all single journies made within a single day.
• A Week fare includes all single journies made within a single week.
• A month fare includes all single journies made within a single month.
• If one of the stations is within Zone B at any point in a journey, the price for Zone B will be charged.
• No matter how many journies are made within one of the time boundaries within a particular zone, the price will cap at that time period's fare.

Given Michael has a ClamCard,
And Michael travels from Asterisk to Aldgate,
Michael will be charged £2.50 for his journey.

Given Michael has a ClamCard,
And Michael travels from Asterisk to Barbican,
And Michael travels from Barbican to Balham,
Michael will be charged £3.00 for his first journey
And a further £3.00 for his second journey.

Given Michael has a ClamCard,
And Michael travels from Asterisk To Barbican,
And Michael travels from Barbican to Balham,
And Michael travels from Balham to Bison, Michael will be charged £3 for his first journey,
And a further £3.00 for his second journey,
And a further £2 for his third journey. (As he will have reached his day cap)
And a further £0.00 for any additional journies within the day

Credit for the original design of this kata to Amir Bazazi

Bonus scenarios here