You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Will you please help me to book a flight ticket from AUS to ATL?

ASSISTANT:  Sure, may I know the travelling dates?

USER: I will start on Jan, 21 and return on Jan, 23.

ASSISTANT: Do you have any connection limit?

USER: I would prefer single connection.

ASSISTANT: Are there any other specifications?

USER: I need to depart at morning time.

ASSISTANT: May I know your name?

USER: Dennis Gonzalez here.

ASSISTANT: Sorry, no flights found with your chosen dates.

USER: Not a problem, thank you for the information.

ASSISTANT:  Thank you for opting us.