You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am Mark Hall here, I would like to visit San Francisco, can you please help me to book a ticket from AUS to SFO?

ASSISTANT: May I know your desired travel dates please?

USER: Sure, my preferable dates of journey is from 02/03 to 02/05. Please make sure that the price limit is 500.

ASSISTANT: There is a flight with connection limit 1 and fare 100, is it ok for you?

USER: Ok, please proceed to book.

ASSISTANT: Your ticket is booked, flight number 1008.

USER: Thank you for your help in reserving my ticket.

ASSISTANT: Thank you for opting us.