You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you today?

USER: I'm Emily Lopez. 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: Can you please share on what dates you are willing to travel?

USER: Sure, my departure date is on 11/01 and the return date is on 11/03.

ASSISTANT: Sorry, there is no flight available at your requested dates?

USER: Ok, no problem. I will search for another way to complete my trip.

ASSISTANT: Thank you for reaching us.

USER: You are welcome. Thank you for checking.

ASSISTANT: Have a great day.