You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: My name is Pamela Brown. I want to attend my friend's marriage in Austin, could you help me in booking the ticket?

ASSISTANT: Can I know your travel dates?

USER: It's from LAS to AUS. The dates of travel are from 08/22 to 08/24.

ASSISTANT: The flight 1015 of Hawaiian airlines is available on your requested dates. Shall I book the ticket?

USER: Please book the ticket.

ASSISTANT: Your ticket is booked.

USER: Thank you for helping me out.

ASSISTANT: Welcome.