You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Can you please help me in booking the flight ticket from HOU to DCA?

ASSISTANT: Would you please provide me your itinerary travel dates?

USER: Desired dates are Apr 06 and Apr 08.

ASSISTANT: Are there any more preferences that you want to avail?

USER: Connected flight required.

ASSISTANT: May I know your name please?

USER: Elizabeth Edwards here.

ASSISTANT: Give me a moment.

USER: Sure.

ASSISTANT: I regret to inform that there are no connecting flights.

USER: No issue. Thanks for your help.

ASSISTANT: Thank you for reaching us.