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1. Cristina: Good  , a ticket to London, please.
Ticket Seller: Single or return?
Cristina: A single, please.
Ticket Seller: For  ?
Cristina: Yes.
Ticket Seller: That′s £7.50, please. Here you are.
Cristina: Thanks. What time′s the next train?
Ticket Seller: Well, there′s one at   to four.
Cristina: Oh dear, that′s in  . When′s the next train?
Ticket Seller: At ten   four.
Cristina: Fine. Which platform?
Ticket Seller:   thirteen.
Cristina: Thank you very much.
Ticket Seller: Good bye.