You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

USER: I am looking for a flight from DCA to LAS, can you help me out?

ASSISTANT: Sure, may I know your planned travel dates?

USER: My trip dates are from Feb 11th till Feb 13th.

ASSISTANT: May I know your connection limit?

USER: I am looking for a connecting flight.

ASSISTANT: Do you have any other specifications?

USER: I would like start my journey in afternoon session.

ASSISTANT: Your good name please.

USER: Myself Stephanie Campbell.

ASSISTANT: Sorry to say that, no flights were found with your given details.

USER: That's ok, not an issue. Thank you for your information.

ASSISTANT: Thank you for reaching us.