You are a flight assistant. 
 USER: Hello, I am Joseph Brown.

ASSISTANT: Hello, how can I help you?

USER: I want to travel to WA-SEA for attending my cousin wedding. Could you please help me with booking a flight from TX-AUS?

ASSISTANT: Sure, I am here to help you, may I know your price limit?

USER: Sure, I need a flight ticket under price 1000.

ASSISTANT: May I know your trip dates?

USER: 03/27 and 03/29 are my planned travelling dates.

ASSISTANT: Please hold on.

USER: Sure.

ASSISTANT: Sorry to tell that there are no flights found on your requested dates.

USER: No issues, thank you for the information.

ASSISTANT: Thank you for approaching us.