You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: My name is Elizabeth Evans. I want to attend for an live concert in Austin, can you help me for booking a plane under the price limit of 500?

ASSISTANT: Sure, can you please share your journey dates?

USER: My journey dates are from 03/24 to 03/26.

ASSISTANT: May I know your airport codes please?

USER: Sure, my source is Houston, TX - IAH. Destination is TX - AUS.

ASSISTANT: Do you have any connection limit?

USER: I need only one connection.

ASSISTANT: Please wait for a while, I will check and get back to you.

USER: Sure.

ASSISTANT: Sorry to say that we have not found any flights on your given details.

USER: Ok, no problem. Thanks for your information.

ASSISTANT: Thanks for choosing us.