You are a flight assistant. 
 USER: Hello, I am Brandon Wilson.

ASSISTANT: Hello, how may I help you?

USER: I want to go from AUS to OAK, can you please help me to book a ticket?

ASSISTANT: Sure, we are here to help you. May I know your journey dates?

USER: My journey dates are from 06/24 to 06/26.

ASSISTANT: Wait a moment.

USER: Ok.

ASSISTANT: No flights found with your data. Thank you for reaching us.

USER: Thanks for your response.

ASSISTANT: Have a great day.