You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I am Jeffrey Young. I want to book to a flight ticket for round trip to Dallas & Fort Worth, TX - DFW. Could you help me in booking?

ASSISTANT: Sure, I am blissful to help you. Can you share your trip details to book your ticket?

USER: My travelling dates are from 08/22 to 08/24.

ASSISTANT: Do you need any halt?

USER: Yes, I need a halt.

ASSISTANT: How much can you afford for ticket?

USER: My price limit is 200.

ASSISTANT: Thank you for your details, there were no flights running in your specified routes.

USER: That's ok, no problem. Thank you.

ASSISTANT: Thank you.