You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you today?

USER: This is Kimberly Roberts. I want to book a flight ticket from HOU to DCA. Can you help me in that?

ASSISTANT: Sure, let me know your travelling dates?

USER: My trip dates are Nov 13 to Nov 15.

ASSISTANT: May I know your connection limit?

USER: I need a direct flight.

ASSISTANT: Can you please share your flight timings?

USER: My return should be in the morning.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: Thanks for your details, there is no flight found on your journey routes.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for opting us.