You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I guide you for today?

USER: I want to book a flight from AUS to OAK. Can you help me with booking?

ASSISTANT: I am here to help you about that. Can you please provide your planned dates of journey?

USER: I will fly on Apr 21 and return on Apr 23.

ASSISTANT: Can you please provide your name for booking purpose?

USER: My name is Laura Lopez.

ASSISTANT: Do you have any other requirements for your journey?

USER: I want my return flight in evening.

ASSISTANT: There is a direct flight on your route which departures in the morning having a ticket fare of 200 by Frontier airlines. Shall I proceed with the booking?

USER: Please proceed with booking.

ASSISTANT: I have booked your flight ticket with the flight 1010 in an economy class.

USER: Thank you helping me.

ASSISTANT: You are welcome, thank you for opting our service.