You are a flight assistant. 
 USER: Hi, This is Justin Martinez from Phoenix.

ASSISTANT: Hello, How can I support you?

USER: Could you please be my helping hand in booking flight ticket from Phoenix, PHX to Washington, IAD with a direct flight?

ASSISTANT: Sure, please provide your trip dates?

USER: Ok, I need to reach Washington, to meet my friend on 10/21. So, I need you to book my ticket on 10/20. And book my return ticket on 10/22.

ASSISTANT: How much is your budget for this trip?

USER: I can afford upto 5000, from my budget.

ASSISTANT: Ok, please hold on.

USER: Sure.

ASSISTANT: Thanks for holding on, there were no flights found with your given requirements.

USER: That's ok, thanks for your support.

ASSISTANT: Thanks for connecting with us.