You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: Can you aid me in booking a flight ticket from IAH to DCA?

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: Please help me with your name.

USER: Myself Benjamin Jackson.

ASSISTANT: Please help me with your planned travelling dates.

USER: Sure, I would like to go on Nov 24th and return back on Nov 26th.

ASSISTANT: Do you need a direct or connecting flight?

USER: Ensure it is a connecting flight.

ASSISTANT: Please let me know with your preferred class to fly.

USER: Any class is fine for me.

ASSISTANT: Do you have any other preferences in your journey?

USER: No, I don't have any other preferences.

ASSISTANT: Benjamin Jackson, I am really sorry to inform you that there are no flights available for your journey.

USER: That's ok, thank you for checking.

ASSISTANT: Thank you for reaching us. Have a great time.

USER: Welcome.