You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you today?

USER: I am Brandon Lewis. I would like to book a ticket from AUS to ORD, can you help me?

ASSISTANT: Sure, let me know your travel dates please?

USER: My travel dates are 07/25 and 07/27.

ASSISTANT: Do you have any specific arrival and depart timings?

USER: I want to depart in the afternoon.

ASSISTANT: Ok, is there any class preference?

USER: No.

ASSISTANT: May I know your connection limit?

USER: I need a connecting flight.

ASSISTANT: Do you have any airline preference?

USER: I am comfortable with any airline.

ASSISTANT: Sorry to inform you that there are no flight services available on your given details.

USER: No problem, thanks for checking.

ASSISTANT: Thanks for reaching us, have a nice day.