You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: Can you find a flight for me from IAD to AUS?

ASSISTANT: Sure, can I know your travelling dates?

USER: Ok, my preferable dates should be Mar 11 to 13.

ASSISTANT: On which name should I reserve the flight ticket?

USER: Emma Allen.

ASSISTANT: Do you have any connection limit?

USER: I need a direct flight.

ASSISTANT: Do you have any other specifications?

USER: I would like to return in the afternoon time.

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

USER: It's ok, thanks for checking.

ASSISTANT: Thank you for reaching us.