You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, may I know how best I can help you today?

USER: I am Kenneth Lee need to book a flight ticket to AUS from LAX?

ASSISTANT: When are you planning to make your journey?

USER: My planned dates are from 01/28 to 01/30.

ASSISTANT: There is a direct flight in Southwest airlines with the fare 200.

USER: Yes, you can proceed.

ASSISTANT: Your booking is done.

USER: Thank you.

ASSISTANT: Thank you.