You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. Is there any help that you need?

USER: I am looking to book a flight ticket from AUS to DFW. Can you help me for that?

ASSISTANT: Sure, I will help you and I need your preferable journey dates to find the flight. Can you please provide it?

USER: My travelling dates are July 30 and Aug 01.

ASSISTANT: I have noted your details in my portal, please provide your remaining details like connection.

USER: I prefer to book a single connecting flight.

ASSISTANT: For further proceeding, may I know your name please?

USER: My name is Daniel Anderson.

ASSISTANT: Thank you for your information, I am unable to find a flight on your travel dates to reserve a flight ticket for your journey.

USER: That's ok, thank you for checking.

ASSISTANT: You are welcome and thank you for reaching us.