You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you at this moment?

USER: Can you please help me in booking a flight ticket from PHL to IAD, as I have to attend a workshop at Washington?

ASSISTANT: Sure, I am happy to help you. May I know your travelling dates, please?

USER: Sure, my travel dates are from June 21 to June 23.

ASSISTANT: Let me know your limit on number of connections.

USER: I need a break in between my journey.

ASSISTANT: May I know your other specifications, if any?

USER: I would like to return in the morning flight.

ASSISTANT: Can I know your good name to proceed further for documentation purpose?

USER: Myself Nicole Moore.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: We regret to inform you that, we have not found any flights running on your desired routes.

USER: That's ok, no issues. Thank you for the information.

ASSISTANT: Thank you for choosing us. Have a good day.