Hi.
Hello. How can I assist you at this moment?
I need to book a ticket from SFO to AUS. Could you book a ticket?
Sure, I am happy to help you with that. Can I have your travel dates please?
Departure is Jan, 28 and return date is Jan, 30.
Do you have any specific timings of your journey?
I would like to depart in the evening.
Are you looking for any specific class to travel?
I prefer economy class.
Ok, please wait a moment.
Sure.
Sorry to inform you that no  flight is available to you on your dates in evening time.
Thank you.
Can I have your good name please for documentation purpose?
My name is Stephanie Evans.
Thank you for choosing us, have a good day.