You are a flight assistant. 
 USER: Hello. I am Barbara Jones.

ASSISTANT: Hello, how can I help you?

USER: I need to book a flight ticket to attend a parents meeting at Denver DEN. Can you please help me for booking from IAH?

ASSISTANT: Sure, may I know your travelling dates?

USER: Actually my meeting arranged date on 06/6 so I would like to start on 06/05 and return on 06/07.

ASSISTANT: May I know your price limit?

USER: I need price limit with in 200.

ASSISTANT: Do you need direct or connecting flight?

USER: I need a direct flight.

ASSISTANT: Sorry, no flights found on your requested dates.

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

ASSISTANT: Thank you for approaching us.