You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER: My name is Brandon Allen. I would like to book a ticket from AUS to ORD.

ASSISTANT: Sure, I am gleeful to help you. May I know on what date you are willing to travel?

USER: My itinerary travel dates are Nov 30 and Dec 2.

ASSISTANT: Do you have any other specifications?

USER: I would like to go with a single connection and return time should be in the evening.

ASSISTANT: Sorry, there are no flights found on your trip dates.

USER: No issue, thank you for your time.

ASSISTANT: Thank you for reaching us, have a nice day.