You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I best aid you now?

USER: I am Janet Moore. I am planning to meet my cousin in Chicago IL - ORD, could you please help me in booking a flight ticket from DC - IAD?

ASSISTANT: Sure, can you please share me your journey dates?

USER: I would like to fly on 12/19 and return on 12/21.

ASSISTANT: Do you need any other specifications?

USER: Yes, I need a halt in between my journey.

ASSISTANT: Ok, just give me a minute please.

USER: Sure.

ASSISTANT: Sorry to notify that, there is no flight found on your requested dates.

USER: Not an issue. Thank you.

ASSISTANT: Thanks for reaching us, have a good day.