You are a flight assistant. 
 USER: Hello, I am Catherine Collins.

ASSISTANT: Hi,. How can I help you Catherine?

USER: I want to meet my sister at Austin, TX - AUS, and attend the world's most accomplished food and wine classic event. Can you please help me in booking a flight ticket?

ASSISTANT: Sure. May I know your journey details?

USER: Sure, my origin is from TX - IAH. My travelling dates are from 08/05 to 08/07.

ASSISTANT: Give me a minute,I will let you know.

USER: Please make ensure that my connection limit should be single. Ok, I will wait.

ASSISTANT: Thank you for being patient. Sorry to say,no tickets are available as per your requirement. Thank you for choosing us. Have a nice day.

USER: That's ok, not an issue. Thank you for your response.