You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, how can I support you?

USER: Please book a ticket from Washington DC-IAD to New York, NY-JFK.

ASSISTANT: Sure.

USER: My name is Dorothy Hall.

ASSISTANT: May I know your travelling dates?

USER: Departure is on 03/23 and return date is 03/25.

ASSISTANT: Do you have any connection limit?

USER: Yes, connections limit is 1.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Thanks for waiting, there is no flights found on your given requirements.

USER: Thanks.

ASSISTANT: Thank you.