You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I need to book my ticket from Washington, DCA to EWR. Can you please help me  with booking a flight ticket?

ASSISTANT: Sure, can you please share your journey dates?

USER: My planned journey dates are from Sept 09 to Sept 11.

ASSISTANT: Are you looking for any preferred connections?

USER: I need a flight with single connection limit.

ASSISTANT: Do you have any other specifications to be met?

USER: No, thank's for asking.

ASSISTANT: Can I have your name to proceed further?

USER: Sure, myself Ashley Thomas.

ASSISTANT: Ok, please wait a moment.

USER: Sure, I will wait for your response.

ASSISTANT: Thank you for your valuable time, unfortunately no flights available on that route.

USER: That's ok, no problem. Thank you for the information.

ASSISTANT: Thank you for reaching us.

USER: Thank you for your service.