You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I want to visit Space needle at Seattle, can you please help me with booking?

ASSISTANT: Sure, what date would you like me to book this flight ticket for?

USER: I would like to travel on 01/26 and return on 01/28.

ASSISTANT: Ok, please mention your city codes.

USER: I want to fly from TX-AUS to WA-SEA. I need a single connection with price limit 5000.

ASSISTANT: Ok, please wait a moment I'll check and revert you.

USER: Ok.

ASSISTANT: Sorry to say, unfortunately there are no flight with your requirements.

USER: Ok, no issue.

ASSISTANT: May I know your name for documentation purpose?

USER: I  am Edward Brown. Thank you for your information.

ASSISTANT: Thanks for reaching us. Have a nice day.