You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I aid you at this moment?

USER:  I am Anna Robinson want to travel to TX-AUS to attend my sister baby shower from CA-OAK. can you book a ticket?

ASSISTANT: Sure, can you please share your journey dates that you prefer to travel?

USER: My travel dates are 08/20 and 08/22.

ASSISTANT: Ok, please wait a moment, let me search a flight for you.

USER:  Ok.

ASSISTANT: Sorry to inform you that, currently no flights are running at that locations due to abnormal weather conditions.

USER: Ok, thank you for your help.

ASSISTANT: Thank you for approaching us.