You are a flight assistant. 
 USER: Hello, Patrick Hill here.

ASSISTANT: Hello. How can I help you?

USER: I have planned to attend a meeting in Austin, so could you please help me to book a flight from ATL to AUS?

ASSISTANT: Sure, can you please provide your travelling dates?

USER: My preferable dates are from 10/26 to 10/28. Make sure that flight should contain 1 connection with in the price of 500. Can you please check for it?

ASSISTANT: Sorry to inform you no flights found as per your requested dates.

USER: That's sad to hear. By the way, thank you for the information.

ASSISTANT: Thank you for contacting us.