1.may i help you?
may i help to take your suitcase?
may i be your guide?
2.could you please examine the check?
could you pay the bill first?
could you double-check your bill?
3.would you like to have a cup of coffee?
would you like to have the dinner in our hotel?
would you like us to help you call a taxi?
4.shall i introduce the famous dishes of our hotel to you?
shall i book a room for you?
shall i call a taxi for you?