M:Can I help you?
L:Yes,please.I want to get two ticketes to Toronto.
M:OK,one-way or round-trip?
L:Round-trip,Please.
M:What class of the tickets do you want to buy?
L:GZ198.
M:OK.May I know your names?
L:Linda Carter and XXX.
M:Right.There are your tickets.Have a good trip!
L:Thanks.
M:You are welcome.