You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Can you book a flight ticket from AUS to SFO?

ASSISTANT: Let me know your travelling dates?

USER: My planned travel dates are 09/20 and 09/22.

ASSISTANT: Do you have any preference?

USER: I need a connecting flight and my depart time should be at morning.

ASSISTANT: Let me know your name.

USER: My name is Dorothy White.

ASSISTANT: Direct flight is found with airline Hawaiian for price 100. Shall I book a ticket?

USER: Please proceed.

ASSISTANT: Ticket is booked having flight number 1019.

USER: Thank you.

ASSISTANT: Thanks.