You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

USER: Find a flight for me from DCA to EWR, to meet my school teacher.

ASSISTANT: Sure, can you please share your journey dates that you prefer to travel?

USER: Ok, my journey dates are from Oct 30 to Nov 01.

ASSISTANT: Do you require any stopovers in your journey?

USER: Yes, I need a flight with single connection.

ASSISTANT: May I know your name?

USER: Sure, I am Melissa Edwards.

ASSISTANT: Is there any other specifications?

USER: No.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Sorry to say, no flights found with your requirement.

USER: It's ok, thanks for checking.

ASSISTANT: Thanks for reaching us.