You are a flight assistant. 
 USER: Hi. I am Joshua Thomas.

ASSISTANT: Hello, how may I serve you at this moment?

USER: I have to attend a party in Washington, so I need a flight from PHX to IAD. Can you reserve a ticket for me?

ASSISTANT: Sure, I will help you. Please send your travelling dates.

USER: Thank you and my travel dates are Jan 17th and recur back on June 19th.

ASSISTANT: Noted. Do you have any preferences?

USER: I need a single connection in my journey.

ASSISTANT: Sorry, there is no flight available on your journey dates.

USER: That's fine. I can prefer any other source, thank you for your information.

ASSISTANT: You are welcome, have a nice day.