You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you today?

USER: My name is Benjamin Hernandez. I want to visit the Space Needle in Seattle, so please book a flight ticket from TX-AUS to WA-SEA.

ASSISTANT: Sure, can I have your planned dates of travelling to proceed?

USER: My departure day is 11/07, return day is 11/09.

ASSISTANT: Ok, please wait a moment, let me check the available flights for you.

USER: Ok.

ASSISTANT: Thanks for waiting, sorry, unfortunately no flights found on that day.

USER: Ok, thanks for your service.

ASSISTANT: Thanks for reaching us.