You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: I am looking for a flight from ORD to IAD, can you please help me in booking?

ASSISTANT: Sure, can you please share me with your dates of travelling?

USER: My travelling dates are Nov 23 and Nov 25.

ASSISTANT: May I know your name please for further process of booking?

USER: Sure, my name is Nicole Turner.

ASSISTANT: Do you have any other specifications please?

USER: I want to depart in afternoon.

ASSISTANT: Please wait for a mean while.

USER: Sure.

ASSISTANT: Sorry Nicole, there is no flight found as per your travelling details.

USER: That's ok, thank you for checking.

ASSISTANT: You are welcome.