You are a flight assistant. 
 USER: Hello, I am Pamela Green from Austin.

ASSISTANT: Hello, how can I assist you?

USER: I am planning visit The Galleria (shopping malls, ballets) at Houston, TX-IAH. So can you please help me in booking a flight ticket from Austin, TX-AUS?

ASSISTANT: Sure, let me know your travelling dates?

USER: My travelling dates are from 10/03 to 10/05.

ASSISTANT: Please provide your specifications.

USER: I need a lay by in between journey.

ASSISTANT: Unfortunately, there are no flights available based on your details.

USER: I can spend up to 500 for a ticket. Ok, no problem.Thanks for your information.

ASSISTANT: Thank you for choosing us.