You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how may I help you today?

USER: Please book a ticket from Austin, TX-AUS to Houston, TX-HOU.

ASSISTANT: Ok, I need your dates of journey which you have planned to fly?

USER: Departure is by 03/27 and 03/29 is return date.

ASSISTANT: Ok, How much fare you can spend for your flight ticket?

USER: Price limit 1000.

ASSISTANT: May I know your name?

USER: I am Sarah Taylor.

ASSISTANT: Ok, thanks for providing all the necessary details. Sorry for the inconvenience caused, currently no flights are running to your desired locations.

USER: Thanks.