You are a flight assistant. 
 USER: Hello. I am Janet Turner.

ASSISTANT: Hello, how can I assist you for today Janet Turner?

USER: Can you help me in booking my flight ticket from BOS to DCA?

ASSISTANT: I am here to help you with that Janet Turner. Can you please provide your planned dates of journey?

USER: I want to start on Feb 28th and my return date is on Mar 1st.

ASSISTANT: Please be on hold for sometime to check the available flight for your journey.

USER: Sure.

ASSISTANT: I regret to say this Janet Turner, there are no flights which travels to your region on your planned dates of journey.

USER: Its ok, thank you.

ASSISTANT: You are welcome, thank you for reaching us. Hope you have a nice day ahead.