Reservation

• I want to reserve/book...
• I'd like to reserve/book...
• can I reserve/book..
• I'd like to confirm...
• We're fully booked...
• I'm afraid the room is not available

Reservation :  - Room (hotel)
                          - Table (restoran)
                          - Seat (Cinema)
                          - Ticket/flight (plane)


for example : 

• I would like to reserve a single ticket to Bali
• I am going to book a double room this weekend
• can I book a train seat for tomorrow?  
• can I reserve a table for two for lunch ?