You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you today?

USER: Please help me to book a flight ticket, As I want to visit and interact in the National Gallery of Art, with my clients. Can you help me with booking?

ASSISTANT: Sure, please provide me your travel dates.

USER: 04/21 and 04/23 are my travel dates.

ASSISTANT: Can you share me your travel location airport codes?

USER: CLT is my origin and EWR is my destination.

ASSISTANT: May I know your name to proceed further?

USER: Edward Anderson is my name.

ASSISTANT: AA airline is providing flight for you with price 200 and connection 0. Shall I proceed?

USER: No, I need a connecting flight. Don't proceed for booking. Thanks for your information.

ASSISTANT: Sorry, we don't have connecting flights for this route. My pleasure.