You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER: I am planning to visit Central Park at New York, could you please help me with booking a flight ticket from IAD to EWR?

ASSISTANT: I am here to help you, may I know your journey dates?

USER: I would like to depart on June 19th and return on June 21st.

ASSISTANT: Let me know your connection limit.

USER: I am looking for a connecting flight.

ASSISTANT: Is there any other concern?

USER: I have no other concerns.

ASSISTANT: Sorry, there is no flight running on your route.

USER: Ok, not an issue. Anyways, thank you for the information.

ASSISTANT: May I know your name for the documentation purpose?

USER: I am Jennifer Miller.

ASSISTANT: Thanks for choosing us.

USER: You are welcome.