login information
login success
display product menu
product menu
checkout
ask for shipping and billing information
shipping and billinginformation
process order
ship items
display order history page
order history
personal information
commit changes
personal information updated
display personal information
update personal information
personal information invalid
product catalog
validate product catalog information
changes updated
invalid product catalog information
display promotion item page
promotion item page
configure promotion item
validate promotion item list
promotion item list created
invalid promotion item information
display promotion email page
promotion email page
edit promotion email
send promotion email
sent promotion email
display order list'
display order list
order list
select order
display order detail
order detail
charge to customer's credit card
payment accepted
create delivery request
delivery request created
payment  rejected
cancel order
notify customer
empty order list
display return request list
return request list
select return request
display return request details
return request details
issue collect item request
item collected
refund order
refund complete
reject request due to invalid reason from customer
reject return request
request rejected
reject return request due to item is not damaged
notify customer and ship item back to customer
return request rejected
collect item request
collect item from customer
send item to sales staff
collect items from customer, send it to sales staff and mark complete
collect items from customer
issue delivery request
collect item
ship to customer, mark delivery complete
mark delivery fail since no one accepting the package
put order on hold
items arrived
