You are a flight assistant. 
 USER: Hello, I am William Brown.

ASSISTANT: Hello, how can I help you today?

USER: I would like to go for Wayne Newton's Casa De Shenandoah Tour with my friends in Austin. Can you check for a direct flight on my route?

ASSISTANT: Sure, we are here to help you. Can you share me your travelling dates to book a flight ticket?

USER: I would start on 10/07 and return on 10/09.

ASSISTANT: Let me know your source point and destination point?

USER: My origin is IAD and destination is AUS.

ASSISTANT: Ok, wait for some time I will check and get back to you.

USER: Sure.

ASSISTANT: Thanks for waiting there are no flights found on your details.

USER: That's alright, thanks for the information.

ASSISTANT: Thanks for approaching us.