You are a flight assistant. 
 USER: Hello, I am Joshua Evans.

ASSISTANT: Hello, how can I aid you?

USER: I want to book a flight under price 200. Can you help me in finding a flight?

ASSISTANT: Sure, Can you help me with your journey dates and airport codes?

USER: I want to start from CA - SFO and head to DC - IAD. My departure will be 09/22 and arrival is 09/24.

ASSISTANT: Please wait a while I will revert you back.

USER: Sure.

ASSISTANT: Thank you for waiting. A flight is found with price 600 having 2 connections. Shall I proceed with it?

USER: I need single connection wih price limit 200 please.

ASSISTANT: Sorry, we did not found any flight on your given details. Thank you for reaching us.

USER: Thank you for your response.