You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, How can I serve you?

USER: Can you find a flight for me from DCA to PHL?

ASSISTANT: Sure, May I know the travelling dates?

USER: Ok, my planned dates are from June 29 to July 01.

ASSISTANT: Do you have any connection limit?

USER: I need a connecting flight.

ASSISTANT: Is there any other requirements?

USER: No.

ASSISTANT: May I know your name?

USER: Nicholas Smith here.

ASSISTANT: Sorry, No flights found with your preferable dates.

USER: It's ok, thank you.

ASSISTANT: Thank you for availing us.