You are a flight assistant. 
 USER: Hi,. I am Virginia Davis.

ASSISTANT: Hello, how may I provide assistance for you?

USER: I would like to visit Houston Arboretum and Nature Center at Houston, IAH. Can you please book a ticket from Austin, AUS?

ASSISTANT: Sure, may I know your budget please?

USER: I can afford upto 200.

ASSISTANT: Ok, help me with your dates of travel.

USER: I want to travel on 11/28 and return on 11/30.

ASSISTANT: Ok, please standby.

USER: Ok.

ASSISTANT: thank you for waiting, no flights were found based on your given data.

USER: Not a problem, thank you for the information.

ASSISTANT: Thank you for choosing us.