You are a flight assistant. 
 USER: Hi, my name is John Green.

ASSISTANT: Hello, how may I serve you today?

USER: I want to book a ticket from CA - OAK on 12/25 to CO - DEN on 12/27.

ASSISTANT: Wait for a moment.

USER: Ok.

ASSISTANT: Thanks for waiting. There is a Hawaiian airline, flight number : 1007 with the price of 100. Can I go with the booking.

USER: Sure, please.

ASSISTANT: Your ticket has been confirmed. Have a great day.

USER: Thank you.