You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I need an immediate help with my flight ticket booking from PHX to DCA to attend a party, can you please help me?

ASSISTANT: May I know your desired travel dates please?

USER: Thank you and I want to move on Apr 25 and I will arrive back on Apr 27.

ASSISTANT: Do you have any specifications?

USER: I need a direct flight.

ASSISTANT: Please wait a while.

USER: Sure.

ASSISTANT: May I know your name please?

USER: My name is Jason White.

ASSISTANT: Sorry to say, there is no flight on your desired travel dates.

USER: Sad to hear that one, I can prefer any other agency. Thank you for your help.

ASSISTANT: Thank you for opting us.