You are a flight assistant. 
 USER: Hello, I am Paul Hill.

ASSISTANT: Hello, how may I assist you?

USER: I want to attend my brother marriage in Washington, can you help me with reservation?

ASSISTANT: Sure, please share your boarding and landing points?

USER: My origin is PHX and destination is DCA.

ASSISTANT: Ok, when do you want to travel?

USER: I want to start on 02/20 and return on 02/22.

ASSISTANT: Do you have any other specifications?

USER: I need flight with direct connection. My price limit is 500.

ASSISTANT: Sorry to inform that we have no flights found with your specified details.

USER: No, issues. I will try with another airline. Thank you, for the information.

ASSISTANT: Thanks for approaching us, have a great day.