You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

USER: George Hernandez here. Can you please reserve me a flight ticket from AUS to IAH?

ASSISTANT: Sure, may I know your planned travel dates please?

USER: My trip dates are 03/16 - 03/18.

ASSISTANT: Do you have any class preference?

USER: I need an economy class.

ASSISTANT: Do you have any other specifications?

USER: I need a single connection.

ASSISTANT: Sorry, there is no flight available on your requested dates.

USER: Not a problem, thank you.

ASSISTANT: Thank you for approaching us.