You're accidentally in a tourist shop. You need a USB cable for your mobile phone.
Can I have a USB cable for Iphone, please?
You're in a train station. You need a single ticket to London.
Can/Could I have a single to London, please?
You're in a tourist shop. You need a postcard.
Can I have one of those postcards, please?
You're in a snack bar again. You need a large coffee and a chocolate muffin.
Can I have a large coffee and a chocolate muffin, please?
You're in a snack bar. You need a sandwich and an apple juice.
Can I have a sandwich and an apple juice, please?
You're in a train station at last. You need a return ticket to Moscow.
Can I have a return ticket to Moscow, please?