You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Ronald Garcia.

ASSISTANT: How can I aid you today?

USER: Will you please reserve me a flight ticket from AUS to MSP to attend for a food festival?

ASSISTANT: I am here to help you with that. Can I know your travel dates?

USER: I would like to depart on Sept 23 and return on Sept 25.

ASSISTANT: Is there any time concern?

USER: Yes, my return time should be morning.

ASSISTANT: May I know your connection limit?

USER: I need a flight having single connection.

ASSISTANT: Which class you prefer to travel?

USER: I am comfortable with any class.

ASSISTANT: sorry to inform this, no flights are found on your desired route.

USER: Ok, no problem. Thank you for the information.

ASSISTANT: Thank you for opting us.