1 She would like to book a round trip ticket.
2 One way or a round trip ticket?
3 How much round trip ticket to go there cost?
4 The round trip ticket is available for two months.
5 I bought a round trip ticket to save money.
6 I need to buy a round trip ticket to Germany.
7 How much does a round trip ticket to go there cost?
8 Let me have a round trip ticket to Detroit, please.
9 I need to get a round trip ticket to Seattle.
10 I want to purchase a round trip ticket to Chengdu.
11 I want to have a round trip ticket to London.