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 Welcome to CSIE Train Booking System 
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Please select the shift you want to book [902001-902005]: >>> The shift is fully booked.
Please select the shift you want to book [902001-902005]: 
Booking info
|- Shift ID: 902003
|- Chose seat(s): 
|- Paid: 

Select the seat [1-40] or type "pay" to confirm: 
Booking info
|- Shift ID: 902003
|- Chose seat(s): 1
|- Paid: 

Select the seat [1-40] or type "pay" to confirm: >>> The seat is booked.

Booking info
|- Shift ID: 902003
|- Chose seat(s): 1
|- Paid: 

Select the seat [1-40] or type "pay" to confirm: 
Booking info
|- Shift ID: 902003
|- Chose seat(s): 1,3
|- Paid: 

Select the seat [1-40] or type "pay" to confirm: 
Booking info
|- Shift ID: 902003
|- Chose seat(s): 1,3,4
|- Paid: 

Select the seat [1-40] or type "pay" to confirm: >>> You cancel the seat.

Booking info
|- Shift ID: 902003
|- Chose seat(s): 3,4
|- Paid: 

Select the seat [1-40] or type "pay" to confirm: >>> Your train booking is successful.

Booking info
|- Shift ID: 902003
|- Chose seat(s): 
|- Paid: 3,4

Type "seat" to continue or "exit" to quit [seat/exit]: 
Booking info
|- Shift ID: 902003
|- Chose seat(s): 
|- Paid: 3,4

Select the seat [1-40] or type "pay" to confirm: >>> The seat is booked.

Booking info
|- Shift ID: 902003
|- Chose seat(s): 
|- Paid: 3,4

Select the seat [1-40] or type "pay" to confirm: 
Booking info
|- Shift ID: 902003
|- Chose seat(s): 6
|- Paid: 3,4

Select the seat [1-40] or type "pay" to confirm: 
Booking info
|- Shift ID: 902003
|- Chose seat(s): 6,7
|- Paid: 3,4

Select the seat [1-40] or type "pay" to confirm: >>> The seat is booked.

Booking info
|- Shift ID: 902003
|- Chose seat(s): 6,7
|- Paid: 3,4

Select the seat [1-40] or type "pay" to confirm: >>> You cancel the seat.

Booking info
|- Shift ID: 902003
|- Chose seat(s): 6
|- Paid: 3,4

Select the seat [1-40] or type "pay" to confirm: 
Booking info
|- Shift ID: 902003
|- Chose seat(s): 1,6
|- Paid: 3,4

Select the seat [1-40] or type "pay" to confirm: >>> The seat is booked.

Booking info
|- Shift ID: 902003
|- Chose seat(s): 1,6
|- Paid: 3,4

Select the seat [1-40] or type "pay" to confirm: >>> The seat is booked.

Booking info
|- Shift ID: 902003
|- Chose seat(s): 1,6
|- Paid: 3,4

Select the seat [1-40] or type "pay" to confirm: >>> Your train booking is successful.

Booking info
|- Shift ID: 902003
|- Chose seat(s): 
|- Paid: 1,3,4,6

Type "seat" to continue or "exit" to quit [seat/exit]: 
Booking info
|- Shift ID: 902003
|- Chose seat(s): 
|- Paid: 1,3,4,6

Select the seat [1-40] or type "pay" to confirm: >>> No seat to pay.

Booking info
|- Shift ID: 902003
|- Chose seat(s): 
|- Paid: 1,3,4,6

Select the seat [1-40] or type "pay" to confirm: >>> Invalid operation.