You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you now?

USER: I would like to book a ticket from AUS to ORD, can you please help me out?

ASSISTANT: Sure, I am  happy to help you with that. Can I have your travel dates please?

USER: I am travelling on these dates Jan 20th and 22nd.

ASSISTANT: Ok, please let me know  your good name.

USER: Jonathan Harris here.

ASSISTANT: Ok, please let me know  the timings of your journey.

USER: I prefer departure time in the afternoon.

ASSISTANT: Do you have any other specifications to get flight for you?

USER: I need single connected flight.

ASSISTANT: Sorry Jonathan Harris, no flight is available to you on your dates.

USER: Ok no problem, thank you for your services.

ASSISTANT: Thank you for choosing us, have a good day.