You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: Jeffrey Perez here. I am looking for a flight ticket in a normal-cost airline. Can you book it?

ASSISTANT: Sure, I will do that for you. Could you please let me know your travel dates?

USER: My travel dates are from Sept 08 to Sept 10.

ASSISTANT: Ok, please tell me your source and destination airport codes.

USER: Yes, airport codes for the journey are AUS to EWR.

ASSISTANT: Ok, do you have any other requirements?

USER: Yes, I am looking for a single connecting flight.

ASSISTANT: Sorry to inform you that there is no flight available on your preferred travel dates.

USER: Ok, that is not a problem. Thank you.

ASSISTANT: You are most welcome and thank you for choosing us.