You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I am planning to visit Austin zoo. Please book a ticket for me from DEN to AUS.

ASSISTANT: Sure, can I know your travel dates?

USER: My journey dates are 01/28 and 01/30.

ASSISTANT: Give me a minute, let me check the details.

USER: Sure.

ASSISTANT: The flight 1002 of Hawaiian airlines is available on your requested dates. Shall I book the ticket?

USER: please book my ticket.

ASSISTANT: Can I know your name for booking the ticket?

USER: George Evans here.

ASSISTANT: Your ticket is booked Evans.

USER: Thank you for helping me.

ASSISTANT: Have a safe journey.

USER: Thanks.