You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you for today?

USER: Myself Jack Johnson. Can you please book a flight ticket from DCA to IAH?

ASSISTANT: Sure, can you help me with your journey dates?

USER: Sure, I need to travel on dates of 02/16 and 02/18.

ASSISTANT: May I know your price limit?

USER: Sure, my budget will be 500.

ASSISTANT: Flight-1023 from AA airlines is available for you, shall I proceed?

USER: That's great, please proceed with booking.

ASSISTANT: Ok, your booking is done.

USER: Thank you for your help.

ASSISTANT: Welcome.