You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how shall I support you for the day?

USER: I am Ryan Garcia. I am planning to go for museum at Phoenix, PHX. Can you please book a ticket from Washington, IAD?

ASSISTANT: To help you, may I have your starting date of journey?

USER: I want to start my journey on 11/04.

ASSISTANT: Are you having any specifications to meet?

USER: I can afford up to 200.

ASSISTANT: Your return date please?

USER: I will return back on 11/06.

ASSISTANT: Please standby.

USER: Sure.

ASSISTANT: Thanks for waiting. Unfortunately, we did not find any flights in your route.

USER: No issues. Thank you.

ASSISTANT: Thank you.