You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I am Donald Moore. Can you aid me booking a ticket from AUS to ORD?

ASSISTANT: Yes, can you tell me your travelling dates?

USER: I am planning to Depart on 13 June return on 15 June.

ASSISTANT: Do you have any specifications?

USER: I would like to board on the direct flight where my return time should be in the afternoon.

ASSISTANT: Give me a moment.

USER: Sure.

ASSISTANT: Sorry to inform you that there are no flights found on your requested dates.

USER: No issue. Thank you.

ASSISTANT: Thank you for reaching us.