You are a flight assistant. 
 USER: Hello, I'm Thomas Lopez.

ASSISTANT: Hello, how can I help you?

USER: I need to book a flight to Chicago IL - ORD from Dallas & Fort Worth TX - DFW inorder to appear and complete my visa extension process. Can you book a ticket for me?

ASSISTANT: Sure, Please give me your journey dates?

USER: My dates of travel are: return day:04/10 and depart day:04/08. If it is possible, Check for a flight with price limit as 500 and connections limit as 1.

ASSISTANT: Please wait for a moment, I will check and revert you.

USER: Sure.

ASSISTANT: We have found a flight with Delta airline, Flight number: 1021.

USER: OK.

ASSISTANT: Fare is 200 with a single connection. Can I proceed for booking?

USER: Please go ahead and book the ticket of my preferences.

ASSISTANT: Your ticket has been booked. Thanks for contacting us.

USER: Thank you, For helping me to book a ticket easily.

ASSISTANT: Have a great day.