You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Christopher Scott here. Can you please check for the flights from IAD to AUS?

ASSISTANT: Sure, let me know your travelling dates.

USER: My journey dates are from June 1st to June 3rd.

ASSISTANT: Do you want connecting flight?

USER: Yes, 1 connection flight.

ASSISTANT: May I know your depart time?

USER: My depart time should be in morning.

ASSISTANT: Do you have any other requirements?

USER: No, thanks for asking.

ASSISTANT: Sorry, there are no flights found with your given details.

USER: Oh! That's fine. Anyways, thank you for checking.

ASSISTANT: Thank you for choosing us.

USER: You are most welcome.