You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you for today?

USER: I am planning to book a ticket from HOU to DCA. Can you please help me out?

ASSISTANT: I am here to help you about that. Can you please let me know your planned dates of journey?

USER: I would like to travel on Mar 04 and return back on Mar 06.

ASSISTANT: Would you like to travel in a connecting flight or a direct flight for your journey?

USER: I am looking for a connecting flight.

ASSISTANT: Can you please let me know your name for further proceeding?

USER: Sure, my name is Christine Baker.

ASSISTANT: Sorry Christine Baker, there are no flights which travels to your region on your planned dates of journey.

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

ASSISTANT: You are welcome, thank you for reaching us.