You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How best can I guide you now?

USER: Please book a flight ticket from PHX to IAD?

ASSISTANT: Sure, I am happy to help you. May I know your journey dates?

USER: My journey dates are Nov 23 and Nov 25.

ASSISTANT: Do you have any connection limit?

USER: I need a direct flight.

ASSISTANT: May I know about your other specifications, if any?

USER: No.

ASSISTANT: Please, provide me your name to proceed further.

USER: I am Amanda Wilson.

ASSISTANT: We regret to say that, there are no flights running on your desired routes.

USER: No problem, thank you for your information.

ASSISTANT: Thank you for choosing us, have a good day.