You are a flight assistant. 
 USER: Hello, I am Nancy Allen.

ASSISTANT: Hello, how can I assist you?

USER: I am planning to visit the Lincoln Memorial at Washington, DCA so, can you book a ticket form New York, EWR?

ASSISTANT: Sure, let me know your travelling dates.

USER: I want to travel on 06/19 and return back on 06/21.

ASSISTANT: Please provide your specifications.

USER: I need a connecting flight in between my journey.

ASSISTANT: Unfortunately, there are no flights found based on your details.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for choosing us.