You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am William Williams.

ASSISTANT: How can I help you today?

USER: I would like to meet my grandparents at Austin, AUS. Can you please book me a ticket from Seattle, SEA?

ASSISTANT: On which dates do you want to travel?

USER: My preferable journey dates are from 03/05 to 03/07.

ASSISTANT: Please give me sometime.

USER: Sure, please search for direct flight on this route.

ASSISTANT: Sorry for the inconvenience, no direct flights available as per your requested dates.

USER: Ok, not an issue. I will find any alternate for this trip. Thank you for providing information.

ASSISTANT: Thank you for contacting us.