You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER: I'm Elizabeth Adams. I am planning to attend business meeting at IAD, can you please help me with booking a flight ticket from ORD?

ASSISTANT: Sure, could you please share your travelling dates?

USER: Sure, I would like to take off on 02/20 and return back on 02/22.

ASSISTANT: Flight-1008 of AA airlines is available for you, shall I proceed?

USER: Yes, please proceed with the booking if the price limit does not exceed 500.

ASSISTANT: Ok, your booking is done with price of 100.

USER: Thank you for your help.

ASSISTANT: Welcome.