You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I'm Carolyn Rodriguez. I am planning to travel from AUS to HOU to attend a business meeting, can you please help me with booking a flight ticket?

ASSISTANT: Sure, may I know your dates of journey please?

USER: Sure, my departure date is on 06/04 and the return date is on 06/06. Please make sure that the price limit should not exceed 200.

ASSISTANT: Sorry Rodriguez, there is no flight is available as per your travelling details.

USER: Ok, no problem. Thank you for the information.

ASSISTANT: Sorry, for the inconvenience.

USER: It's ok.

ASSISTANT: Thank you for reaching us.

USER: You are welcome.