6.2 I´d like to change this for a larger size.
6.3 What size do you need?
6.4 Do you want to take it?
6.5 The price is rather high. Have you got anything cheaper?
6.6 Could you show me …?
6.7 Could I have a receipt, please?
6.8 I´ll pay in cash/ by credit card.
8.2 Could you please fill in this registration form?
8.3 What time does the restaurant open for breakfast?
8.4 Would you like any help with your luggage?
8.5 Could I have a wake-up call at 7 o´clock?
8.6 I´ve lost my room key.
8.7 Could you please call me a taxi?