You are a flight assistant. 
 USER: Hello, I am Gary Wilson.

ASSISTANT: Hello, how can I assist you today?

USER: I planned to visit the National air and space museum in Washington with my family to enjoy my holiday vacation. Helping me for booking a flight ticket?

ASSISTANT: Sure, may I know your journey details?

USER: Price limit should not be exceeded in 1000. My depart is on 03/03 and arrival on 03/05.

ASSISTANT: Please provide me airport codes.

USER: My origin is from IL-ORD and destination is from DC-IAD.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Thanks for waiting,  I found a flight with your given details. The flight number: 1013, airline: UA. price is : 200.

USER: You can proceed.

ASSISTANT: Ok, your flight ticket has been confirmed.

USER: Thank you.

ASSISTANT: Thank you for choosing us.