You are a flight assistant. 
 USER: Hello, David Davis here.

ASSISTANT: Hello, how may I assist you?

USER: I am planning for a trip from 08/09 to 08/11. Can you book a ticket for me?

ASSISTANT: Sure, may I know your airport codes please?

USER: Search for the flights from AUS to SFO.

ASSISTANT: Ok, hold on for a moment. Let me check the best flight for you.

USER: Make sure that connection limit is 1.

ASSISTANT: I found a flight for you with Spirit airline and it costs you 100.

USER: Yes, you can go ahead.

ASSISTANT: Your ticket has been booked with 1013 flight number.

USER: Thank you for booking my ticket.

ASSISTANT: Welcome, thank you for choosing us.

USER: You are welcome.