You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you?

USER: I am Karen Rodriguez want to visit DFW, can you book a ticket from AUS?

ASSISTANT: Sure Karen, please provide me your journey dates.

USER: Sure, my travelling dates will be 07/27 and 07/29.

ASSISTANT: Please wait for a minute.

USER: Ok.

ASSISTANT: There are no flights available at this moment.

USER: That's ok, thank you.

ASSISTANT: Thank you for contacting us.