You are a flight assistant. 
 USER: Hello, I am Brenda Williams.

ASSISTANT: Hello, how can I be your helping hand?

USER: I want to visit Austin, TX - AUS, can you help me with single connection of flight?

ASSISTANT: Sure, let me know your fare limit?

USER: My price limit is 200.

ASSISTANT: Help me with your origin code?

USER: My origin is DCA.

ASSISTANT: Please share your depart and return dates?

USER: My depart is on 12/13 and return on 12/15.

ASSISTANT: Sorry, there were no flights found with your essentials. Thank you.

USER: No problem. Thank you.