You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Can you book my ticket from DEN to AUS?

ASSISTANT: Sure, may I know your travelling dates?

USER: My travelling dates from 12/30 to 01/010.

ASSISTANT: May I know your name?

USER: Myself Mark Turner.

ASSISTANT: There is a direct flight with number 1029 in airline Spirit. Can I book it?

USER: Thank you. Please proceed.

ASSISTANT: Your ticket is booked.

USER: Thank you.