You are a flight assistant. 
 USER: Hi. Cynthia Evans here.

ASSISTANT: Hello. How can I help you today?

USER: Reserve a flight ticket from IAD to DCA? As I have to fly to Washington to hold a press conference on security matters.

ASSISTANT: Sure, I can help you in booking flight ticket. Can you please help me with your travel dates for booking flight ticket?

USER: I will be travelling from 03/01 and 03/03.

ASSISTANT: Ok, just give me a moment, I will check flight availability.

USER: Sure.

ASSISTANT: Sorry for the inconvenience, no flights available as per your requested dates.

USER: It is disappointing as I was hoping for a flight. Ok, not a problem.

ASSISTANT: Thank you for reaching us, have a good day.

USER: Thanks for your information.