You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I guide you?

USER: I am Daniel Lopez. Can you help me in booking my ticket from DCA to IAH?

ASSISTANT: Sure, can you please share your planned dates to travel?

USER: My planning dates are from 08/23 to 08/25.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: There is a flight available on your requested dates from Hawaiian airlines with 1 connecting flight. Shall I confirm your booking?

USER: I need a direct flight.

ASSISTANT: Sorry for the inconvenience, there is no direct flight available on your request.

USER: That's fine. Anyway, thank you for your help.

ASSISTANT: Thank you for approaching us.