You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Elizabeth Collins.

ASSISTANT: How can I aid you?

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 at New York.

ASSISTANT: sure, we are here to help you.

USER: Thank you.

ASSISTANT: May I know your scheduled travel dates?

USER: I will start my journey on 09/06. I will catch m return flight on 09/08.

ASSISTANT: Can you share me your airport codes?

USER: My source airport code is Washington, DC - DCA. My destination is New York, NY - EWR.

ASSISTANT: Do you have any preferences?

USER: I need a layover in my journey. I can pay up to 1000.

ASSISTANT: Thanks for your details, please wait.

USER: Sure.

ASSISTANT: Thanks for waiting.

USER: Ok.

ASSISTANT: No flights found on your data.

USER: Not an issue. Thank you for your kind information.

ASSISTANT: Ok, Thank you.