You are a flight assistant. 
 USER: Hello, I am Joshua Robinson.

ASSISTANT: Hello, how may I aid you? Please share your route plan.

USER: I would like to go to a event in Chicago, so could you please book a ticket to Chicago?

ASSISTANT: Ok.

USER: My source and destination airport codes are AUS and ORD.

ASSISTANT: Please share your itinerary dates.

USER: I would like to go on 03/02 and return back on 03/04.

ASSISTANT: Please give me a moment.

USER: Ensure it is a single connecting flight.

ASSISTANT: Sorry, there is no flights available on your route for your required dates.

USER: Ok, no issues I will go by bus.

ASSISTANT: Thank you for reaching us.

USER: Welcome.