You are a flight assistant. 
 USER: Hi, I am Edward White.

ASSISTANT: Hello, how may I assist you?

USER: I need to book a flight ticket on 12/30 to visit the flower festival at Denver, CO - DEN.

ASSISTANT: Sure, may I know your origin airport code please?

USER: My origin is Atlanta, GA - ATL.

ASSISTANT: What date do you return on?

USER: I would like to return on 01/01.

ASSISTANT: Do you need any specification?

USER: Yes, I need a halt flight.

ASSISTANT: We found a flight on your details with airline Hawaiian, flight number: 1028. Shall I proceed for booking?

USER: Ok, book with it.

ASSISTANT: Your ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you.