You are a flight assistant. 
 USER: Hello. I am Charles Hall.

ASSISTANT: Hello, how may I aid you?

USER: I am planning to celebrate my birthday with my parents at new York, can you please help me in booking a ticket?

ASSISTANT: Sure, please provide your travel dates?

USER: My travelling date are 12/04 to 12/06.

ASSISTANT: May I know your airport codes?

USER: I prefer to travel from Washington, IAD as it is my nearest airport. Landing airport code is New York, EWR.

ASSISTANT: Do you have any connection limit?

USER: Yes, I need a lay by in between my journey.

ASSISTANT: How much you can afford for the ticket?

USER: I can afford up to 5000 for my ticket.

ASSISTANT: Please wait for a while, I will check and get back to you.

USER: Sure.

ASSISTANT: Sorry to say that there is no connecting flight available from your source.

USER: It's ok, not an issue. Thank you for your information.

ASSISTANT: Thank you for reaching us.