You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I would like to book a flight ticket from AUS to IAD to meet my brother. Can you please help me with booking a flight ticket?

ASSISTANT: Sure, kindly share your travel dates.

USER: Sure, my travelling dates are Mar 13 and Mar 15.

ASSISTANT: Do you have any connection limit?

USER: I need a lay by in between the journey.

ASSISTANT: May I know your name?

USER: I am Donald Davis.

ASSISTANT: Sorry to say, no flights found with your requirement.

USER: No worries, thank you for the information.

ASSISTANT: Thanks for reaching us.