You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Anna Taylor here.

ASSISTANT: How may I aid you?

USER: I want to attend a marriage at Austin, can you please help me in booking a flight ticket from AUS to ORD?

ASSISTANT: Sure, I am here to help you with that. Could you please provide me your travel dates?

USER: My travel dates are 09/05 and 09/07.

ASSISTANT: Ok, please wait a minute while I am checking the flight availability.

USER: Sure, I will wait for your response.

ASSISTANT: Sorry to inform you, there is no flight available on the dates you have given.

USER: That's ok, no problem. Anyway thank you for the information.

ASSISTANT: You are welcome.