You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Dennis Gonzalez.

ASSISTANT: How may I assist you?

USER: I am planning to meet my brother at Washington, will you help me in booking the flight ticket from PHL to IAD?

ASSISTANT: Sure, let me know your trip dates?

USER: My travelling dates are Jan 03 and Jan 05.

ASSISTANT: Do you need any halt in between your journey?

USER: I need a flight with single connection.

ASSISTANT: Do you need any specifications?

USER: I can afford up to 500.

ASSISTANT: Please hold on a moment.

USER: Ok, I will wait for your response.

ASSISTANT: Sorry to inform you that, there is no flights found on your routes.

USER: Ok, not an issue. Thank you for your information.

ASSISTANT: Thanks for reaching us, have a nice day.