Create a flowchart for a process of purchasing a BTS ticket from an automatic ticketing machine, starting from select a number of stations to travel until receiving the ticket. Conditions to calculate the ticket prices are as following.
1 station : 10 Baht
2 stations : 15 Baht
3 stations : 20 Baht
4 stations : 25 Baht
5 stations or more : 30 Baht